Cloudflare changelogs | WAF

WAF - Leaked credentials detection now scans Authorization headers

Thu, 20 Aug 2026 00:00:00 GMT

Leaked credentials detection now scans the Authorization request header for Basic Authentication credentials. Previously, the detection only inspected request bodies, query strings, and headers for well-known web applications or custom detection locations, which meant credentials sent through HTTP Basic Authentication were not covered by default.

This new default scan location decodes the Authorization: Basic <credentials> header and compares the extracted username and password against Cloudflare's database of leaked credentials, the same way as other default scan locations. Matches populate the existing leaked credentials fields, such as cf.waf.credential_check.password_leaked, and trigger the Exposed-Credential-Check managed transform header if configured, so you can reuse existing custom rules and rate limiting rules without changes.

This change was applied automatically for zones with leaked credentials detection enabled. No configuration changes are required.

For more information, refer to Leaked credentials detection.

WAF - WAF Release - 2026-08-17

Mon, 17 Aug 2026 00:00:00 GMT

This release updates WordPress remote code execution rule metadata in the Cloudflare Managed Ruleset and Cloudflare Free Ruleset to identify CVE-2026-65640.

Key Findings

CVE-2026-65640: A remote code execution vulnerability affecting WordPress core and plugin components. Remote, unauthenticated attackers can execute arbitrary system commands to gain unauthorized access or establish backdoors on host servers.

Impact

The WordPress changes update rule metadata only; detection behavior and actions remain unchanged.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	Wordpress - Remote Code Execution - CVE:CVE-2026-65640	Block	N/A	Rule metadata description refined. Detection unchanged.
Cloudflare Free Ruleset		N/A	Wordpress - Remote Code Execution - CVE:CVE-2026-65640	Block	N/A	Rule metadata description refined. Detection unchanged.

WAF - WAF Release - Scheduled changes for 2026-08-24

Mon, 17 Aug 2026 00:00:00 GMT

Announcement Date	Release Date	Release Behavior	Legacy Rule ID	Description	Comments
2026-08-17	2026-08-24	Log	N/A	HTTP/2 Request Smuggling - Request Body Anomaly	This is a new detection.
2026-08-17	2026-08-24	Log	N/A	XSS - JavaScript Event Handler Coercion - Headers	This is a new detection.
2026-08-17	2026-08-24	Log	N/A	XSS - JavaScript Event Handler Coercion - Body	This is a new detection.
2026-08-17	2026-08-24	Log	N/A	XSS - JavaScript Event Handler Coercion - URI	This is a new detection.
2026-08-17	2026-08-24	Log	N/A	XSS, HTML Injection - Script Tag - Beta	This rule will be merged into the original rule "XSS, HTML Injection - Script Tag" (ID: ).

WAF - WAF Release - 2026-08-11

Tue, 11 Aug 2026 00:00:00 GMT

This release introduces new protection for a remote code execution vulnerability in vBulletin and improves two existing detections.

Key Findings

A new detection provides protection against vBulletin CVE-2026-61511.
Two existing detections have been improved to strengthen coverage.

Impact

Successful exploitation of CVE-2026-61511 may lead to remote code execution on affected vBulletin systems, potentially resulting in unauthorized access, data exposure, service disruption, and broader compromise of the hosting environment. Administrators are strongly encouraged to apply vendor updates and recommended mitigations.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	vBulletin - Remote Code Execution - CVE:CVE-2026-61511	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	Version Control - Information Disclosure - Beta	Log	Block	This rule is merged into the original rule "Version Control - Information Disclosure" (ID: )
Cloudflare Managed Ruleset	N/A	vBulletin - Code Injection - Invalid image format - CVE:CVE-2019-17132 - Beta	Log	Block	This rule is merged into the original rule "vBulletin - Code Injection - Invalid image format - CVE:CVE-2019-17132" (ID: )

WAF - WAF Release - 2026-08-07

Fri, 07 Aug 2026 00:00:00 GMT

This release updates WordPress XSS rule metadata in the Cloudflare Managed Ruleset and Cloudflare Free Ruleset to identify XSS2Shell (CVE-2026-64638). It also disables the Command Injection - Obfuscation rule.

Key Findings

CVE-2026-64638: A pre-authentication reflected cross-site scripting vulnerability affecting the WordPress login screen. Exploitation requires social engineering and explicit interaction by the target user. Under additional conditions, it may be escalated to remote code execution.

Impact

The WordPress changes update rule metadata only; detection behavior and actions remain unchanged.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	Wordpress - XSS - CVE:CVE-2026-64638	Block	N/A	Rule metadata description refined. Detection unchanged.
Cloudflare Free Ruleset	N/A	Wordpress - XSS - CVE:CVE-2026-64638	Block	N/A	Rule metadata description refined. Detection unchanged.
Cloudflare Managed Ruleset	N/A	Command Injection - Obfuscation	Block	Disabled	Detection logic has been deprecated

WAF - WAF Release - 2026-08-04

Tue, 04 Aug 2026 00:00:00 GMT

This release introduces new rules and updates Microsoft SharePoint RCE alongside enhanced SSRF cloud protection rule actions.

Key Findings

CVE-2026-50522: An insecure deserialization vulnerability in Microsoft SharePoint Server. This may allow an unauthenticated attacker to execute arbitrary code using crafted requests.
CVE-2026-66066: An improper input processing vulnerability in Ruby on Rails Active Storage image variant transformations. This may allow an unauthenticated attacker to perform arbitrary file reads and achieve Remote Code Execution (RCE) using maliciously crafted payload requests.
Generic Cloud Protections: Added improved detection logic targeting Server-Side Request Forgery (SSRF) in cloud-hosted applications.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	Microsoft SharePoint - Remote Code Execution - CVE:CVE-2026-50522	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	Rails - Arbitrary File Read & RCE - CVE:CVE-2026-66066	Block	Block	This was labeled as File Upload - RCE.
Cloudflare Managed Ruleset	N/A	SSRF - Local	Disabled	-	This detection has been removed.
Cloudflare Managed Ruleset	N/A	SSRF - Local - 2 - Beta	Disabled	-	This detection has been removed.
Cloudflare Managed Ruleset	N/A	SSRF - Cloud - Beta	Disabled	-	This detection has been removed.
Cloudflare Managed Ruleset	N/A	SSRF - Cloud - 2 - Beta	Disabled	-	This detection has been removed.
Cloudflare Managed Ruleset	N/A	SSRF - Cloud	Disabled	Block	We are changing the action for this rule from Disabled to BLOCK
Cloudflare Managed Ruleset	N/A	SSRF - Local - Beta	Disabled	-	This detection has been removed.

WAF - WAF Release - 2026-07-29

Wed, 29 Jul 2026 00:00:00 GMT

This release introduces new rules and updates existing threat signatures to provide targeted protections for vulnerabilities in Nuxt Server Island components and Alibaba Fastjson deserialization routines, alongside enhanced protections for cloud metadata Server-Side Request Forgery (SSRF) and obfuscated command injection attempts.

Key Findings

Nuxt Server Island - RCE(GHSA-9473-5f9j-94wq): An unauthenticated vulnerability in Nuxt Server Islands where remote attackers can supply arbitrary component names or props to endpoints. Manipulating these parameters allows unauthenticated component Remote Code Execution (RCE) on the server.
Alibaba Fastjson JSONType Remote Code Execution: A unauthenticated remote code execution vulnerability in Alibaba Fastjson (≤ 1.2.83) during JSON deserialization. Under default configurations, attackers can execute arbitrary system commands, bypassing traditional classpath and gadget-based defenses.
Generic Protections (SSRF & Command Injection): Added improved detection logic targeting Server-Side Request Forgery (SSRF) in cloud-hosted applications, alongside new rules targeting obfuscated command injection patterns across request parameters.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	SSRF - Cloud - Beta	Log	Block	This is an improved detection.
Cloudflare Managed Ruleset	N/A	Command Injection - Obfuscation	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	Alibaba Fastjson JSONType Remote Code Execution - Body	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	Nuxt Server Island - RCE	N/A	Block	This is a new detection.This was labeled as Generic Rules - RCE.
Cloudflare Managed Ruleset	N/A	Generic Rules - RCE	N/A	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	Generic Rules - XSS	N/A	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	File Upload - RCE	N/A	Block	This is a new detection.
Cloudflare Free Ruleset	N/A	Generic Rules - RCE	N/A	Block	This is a new detection.
Cloudflare Free Ruleset	N/A	Generic Rules - XSS	N/A	Block	This is a new detection.
Cloudflare Free Ruleset	N/A	File Upload - RCE	N/A	Block	This is a new detection.

WAF - WAF Release - 2026-07-21

Tue, 21 Jul 2026 00:00:00 GMT

This release introduces new rules for vulnerabilities in Adobe ColdFusion, Next.js, WordPress alongside updates to existing rules thereby providing enhanced generic protections against Server-Side Request Forgery (SSRF), Local File Inclusion (LFI), and Cross-Site Scripting (XSS).

WAF and framework adapter mitigations for Next.js vulnerabilities

Multiple security vulnerabilities ↗ were disclosed and patched by the Next.js team through July 2026 security release. These include denial of service, middleware and proxy bypass, server-side request forgery, information disclosure, and cache poisoning across a range of severities.

Several of the disclosed vulnerabilities are not possible to block at WAF layer,we strongly recommend updating your application and its dependencies immediately. Patched versions are available through v16.2.11 (Active LTS) and v15.5.21 (Maintenance LTS) to address these issues.

Advisory	CVE	Severity	Issue	WAF Coverage
Denial of Service in App Router using Server Actions	CVE-2026-64641	High	Crafted requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive CPU usage. The CPU usage blocks processing of further requests in the same process, leading to Denial of Service.	WAF rule Next.js - DoS - CVE-2026-64641 () has been deployed to provide coverage.
Middleware / Proxy bypass in App Router applications using Turbopack and single locale	CVE-2026-64642	High	Next.js applications using App Router built with Turbopack and a single entry in config.i18n.locales are vulnerable to a middleware/proxy bypass. Accordingly, any authentication or security checks that a middleware/proxy may perform are bypassed.	This is a middleware bypass that unfortunately cannot be covered through Cloudflare WAF signature engine.
Server-Side Request Forgery in rewrites via attacker-controlled destination hostname	CVE-2026-64645	High	A rewrites() or redirects() rule that builds its external destination hostname from request-controlled input can be pointed at an arbitrary hostname, regardless of the rule's hostname suffix. For rewrites, this behavior enables Server-Side Request Forgery (SSRF); for redirects, Open Redirect can be achieved.	Existing SSRF rules provide adequate coverage for this vulnerability, no tailored WAF rule was developed.
Server-Side Request Forgery in Server Actions on custom servers	CVE-2026-64649	High	When a Server Action forwards or redirects a request, an attacker can cause the server to send that outbound request to a malicious host (Server-Side Request Forgery). This requires the attacker’s request to control Host-associated headers.	WAF rule Next.js - SSRF - CVE-2026-64649 () has been deployed to provide coverage.
Denial of Service in the Image Optimization API using SVGs	CVE-2026-64644	Medium	When self-hosting Next.js with the default image loader, the Image Optimization API can optimize remotely hosted images if configured (not enabled by default). If those images contain malicious content, the images can cause CPU exhaustion in the /_next/image endpoint.	Malicious request is unfortunately indistinguishable from a legitimate image optimization request, so no WAF rule has been created to address this vulnerability.
Unbounded Server Action payload in Edge runtime	CVE-2026-64646	Medium	A crafted request can lead to memory consumption on Server Actions in the Edge runtime. Next.js applications which use App Router and have at least one Server Action are affected.	Unfortunately there is no one size fits all rule that can be deployed through WAF in lieu of custom bodySizeLimit configurations, so no WAF rule has been created to address this vulnerability.
Unauthenticated disclosure of internal Server Function endpoints	CVE-2026-64643	Medium	In Next.js applications using App Router, Server Actions (use server) or use cache endpoint IDs can be globally disclosed. An attacker can use this for reconnaissance and as part of a broader attack chain.	WAF rule Next.js - Information Disclosure - CVE-2026-64643 () has been deployed to provide coverage.
Cache confusion of response bodies for requests with bodies	CVE-2026-64648	Medium	A server-side fetch with a request body may return a cached response body from a different request to the same URL but different body. This only applies for fetch calls of the shape fetch(new Request(init), aDifferentInit)	This is an application logic bug that unfortunately cannot be covered through Cloudflare WAF signature engine.
Cache confusion of response bodies for requests with bodies containing invalid UTF-8 byte sequences	CVE-2026-64647	Medium	A server-side fetch with a request body may return a cached response body from a different request to the same URL but different body. This only applies when receiving request bodies which contain invalid UTF-8 characters.	This is an application logic bug that unfortunately cannot be covered through Cloudflare WAF signature engine.

Key Findings

CVE-2026-48276: A path traversal vulnerability in Adobe ColdFusion file upload mechanisms allows unauthenticated attackers to write or upload files to arbitrary locations outside designated directories on the origin server.
CVE-2026-48282: A path traversal vulnerability in Adobe ColdFusion enables unauthenticated attackers to manipulate directory sequences and access restricted system files on the host filesystem.
CVE-2026-60137: An unauthenticated SQL injection vulnerability affecting WordPress. Threat actors exploit unsanitized input parameters to execute arbitrary SQL queries, leading to unauthorized database access, record manipulation, or data exfiltration.
CVE-2026-63030: A remote code execution vulnerability affecting WordPress core and plugin components. Remote, unauthenticated attackers can execute arbitrary system commands to gain unauthorized access or establish backdoors on host servers.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	SSRF - Restricted Protocol	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SSRF - Obfuscated Host	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	LFI - Path Traversal	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	Adobe ColdFusion - File Upload Path Traversal - CVE:CVE-2026-48276	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	Adobe ColdFusion - Path Traversal - CVE:CVE-2026-48282	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	XSS — JS Bracket Concat Obfuscation - Body	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	XSS — JS Bracket Concat Obfuscation - Headers	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	XSS — JS Bracket Concat Obfuscation - URI	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	Wordpress - SQL Injection - CVE:CVE-2026-60137	N/A	Block	This was labeled as Generic Rules - SQLi.
Cloudflare Managed Ruleset	N/A	Wordpress - Remote Code Execution - CVE:CVE-2026-63030	N/A	Block	This was labeled as Generic Rules - Unauthenticated RCE.
Cloudflare Free Ruleset	N/A	Wordpress - SQL Injection - CVE:CVE-2026-60137	N/A	Block	This was labeled as Generic Rules - SQLi.
Cloudflare Free Ruleset	N/A	Wordpress - Remote Code Execution - CVE:CVE-2026-63030	N/A	Block	This was labeled as Generic Rules - Unauthenticated RCE.
Cloudflare Managed Ruleset	N/A	Next.js - Information Disclosure - CVE-2026-64643	N/A	Block	This was labeled as Generic Rules - Information Disclosure.
Cloudflare Managed Ruleset	N/A	Next.js - SSRF - CVE-2026-64649	N/A	Block	This was labeled as Generic Rules - Auth Bypass - 2.
Cloudflare Managed Ruleset	N/A	Next.js - Remote Code Execution - Cache Components	N/A	Block	This was labeled as Generic Rules - RCE.
Cloudflare Managed Ruleset	N/A	Next.js - DoS - CVE-2026-64641	N/A	Block	This was labeled as Generic Rules - DoS.
Cloudflare Managed Ruleset	N/A	Generic Rules - Command Execution - Body - Beta	Disabled	-	This detection has been removed.
Cloudflare Managed Ruleset	N/A	Generic Rules - Command Execution - Header - Beta	Disabled	-	This detection has been removed.
Cloudflare Managed Ruleset	N/A	Generic Rules - Command Execution - URI - Beta	Disabled	-	This detection has been removed.

WAF - WAF Release - 2026-07-17 - Emergency

Fri, 17 Jul 2026 00:00:00 GMT

This emergency release adds a new managed rule to block active exploitation of a critical remote code execution (RCE) and SQL injection (SQLi) vulnerability found in popular web frameworks.

Key Findings

Generic Frameworks - Unauthenticated RCE: Attackers can execute arbitrary system commands with web server privileges by sending malicious input containing invalid path sequences during request processing.
Generic Frameworks - SQLi: Attackers can execute unauthorized database queries due to a failure to sanitize input values within request parameters.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	Generic Rules - Unauthenticated RCE	N/A	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	Generic Rules - SQLi	N/A	Block	This is a new detection.
Cloudflare Free Ruleset	N/A	Generic Rules - Unauthenticated RCE	N/A	Block	This is a new detection.
Cloudflare Free Ruleset	N/A	Generic Rules - SQLi	N/A	Block	This is a new detection.

WAF - WAF Release - 2026-07-14

Tue, 14 Jul 2026 00:00:00 GMT

This release introduces new rules targeting critical infrastructure vulnerabilities. These include an unauthenticated memory disclosure flaw in Citrix NetScaler ADC and Gateway (CVE-2026-8451) and a high-severity pre-authentication remote code execution (RCE) vulnerability in Progress Kemp LoadMaster (CVE-2026-8037).

Key Findings

CVE-2026-8451: An insufficient input validation vulnerability affects Citrix NetScaler ADC and NetScaler Gateway appliances configured as a SAML Identity Provider (IdP). Remote, unauthenticated attackers can exploit this flaw by sending malformed requests to trigger a memory overread, allowing them to leak chunks of sensitive data from adjacent appliance memory.
CVE-2026-8037: A critical OS command injection vulnerability in Progress Kemp LoadMaster load balancers allows unauthenticated remote attackers to achieve remote code execution (RCE).

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	Citrix Netscaler ADC - Insufficient Input Validation - CVE:CVE-2026-8451	Log	Block	This is a new detection.
Cloudflare Managed Ruleset		N/A	Progress Kemp LoadMaster - Remote Code Execution - CVE:CVE-2026-8037	Log	Block	This is a new detection.

WAF - WAF Release - 2026-07-01

Wed, 01 Jul 2026 00:00:00 GMT

This release adds targeted coverage for a path traversal flaw in Fortinet FortiSandbox (CVE-2026-39813) and transitions the Anomaly:Header:User-Agent - Fake Bing or MSN Bot rule action from Block to Disabled.

Key Findings

CVE-2026-39813: A path traversal vulnerability in Fortinet FortiSandbox allows remote, unauthenticated attackers to read arbitrary files from the underlying filesystem due to insufficient validation of user-supplied input paths.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	Fortinet FortiSandbox - Path Traversal - CVE:CVE-2026-39813	Log	Block	This is a new detection.
Cloudflare Managed Ruleset		N/A	Anomaly:Header:User-Agent - Fake Bing or MSN Bot	Enabled	Disabled	We are changing the action for this rule from BLOCK to Disabled

WAF - WAF Release - 2026-06-23

Tue, 23 Jun 2026 00:00:00 GMT

This week's release introduces new managed protection to address a critical pre-authentication OS command injection vulnerability in Ivanti Sentry (CVE-2026-10520).

Key Findings

CVE-2026-10520: An OS command injection vulnerability in Ivanti Sentry allows remote, unauthenticated attackers to execute arbitrary system commands with root privileges. The flaw stems from improper sanitization of input strings parsed during internal configuration handling.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	Ivanti Sentry - Command Injection - CVE:CVE-2026-10520	Log	Block	This is a new detection.

WAF - Use Cloudforce One threat intelligence in WAF rules

Mon, 15 Jun 2026 00:00:00 GMT

You can now match incoming requests against Cloudforce One threat intelligence in your WAF rules. A new detection looks up the client IP address of each request against the threat intelligence database. If the IP was involved in threat activity in the past seven days, Cloudflare populates cf.intel.ip.* fields that you can use in custom rules and rate limiting rules.

The detection populates the following fields. Use the any() function with the [*] wildcard to match array values:

cf.intel.ip.datasets — the dataset that flagged the IP address (ddos or waf).
cf.intel.ip.target_industries — industries the IP address has targeted.
cf.intel.ip.attacker_names — known threat actors associated with the IP address.
cf.intel.ip.attacker_countries — source countries of the threat activity.
cf.intel.ip.target_countries — countries the IP address has targeted.

For example, the following custom rule expression blocks requests from IP addresses associated with DDoS activity that have targeted France:

any(cf.intel.ip.target_countries[*] == "FR") and any(cf.intel.ip.datasets[*] == "ddos")

These fields work with the Cloudflare API and Terraform. Matches are logged in Security Analytics.

The threat intelligence detection is available to customers with an active Cloudforce One subscription. For more information, refer to Threat intelligence.

WAF - WAF Release - 2026-06-15

Mon, 15 Jun 2026 00:00:00 GMT

This week's release introduces new managed protection to address a critical SQL injection vulnerability in Ghost CMS (CVE-2026-26980) and a new generic rule designed to identify and block sophisticated SQL Injection (SQLi) bypass attempts leveraging obfuscated boolean logic. These rules protect affected installations from unauthorized data exfiltration at the network edge.

Key Findings

CVE-2026-26980: A blind SQL injection vulnerability in the Ghost CMS Content API (versions 3.24.0 to 6.19.0) allows unauthenticated remote attackers to inject malicious SQL commands via query parameters due to improper input validation.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	Ghost CMS - SQLi - CVE:CVE-2026-26980	Log	Block	This is a new detection.
Cloudflare Managed Ruleset		N/A	SQLi - Obfuscated Boolean - URI	Log	Disabled	This is a new detection.

WAF - WAF Release - 2026-06-09

Tue, 09 Jun 2026 00:00:00 GMT

This release introduces new detections for a critical SQL injection vulnerability in Drupal installations utilizing PostgreSQL (CVE-2026-9082), alongside targeted protection for an unsafe deserialization flaw in the Mirasvit Cache Warmer extension (CVE-2026-45247). Additionally, this release includes coverage for a prototype pollution vector in Axios (CVE-2026-40175) and a new generic rule designed to identify and block sophisticated SQL Injection (SQLi) bypass attempts leveraging obfuscated boolean logic.

Key Findings

CVE-2026-9082: A database abstraction vulnerability affects Drupal sites configured with a PostgreSQL backend. Remote, unauthenticated attackers can exploit this flaw via crafted inputs to inject malicious SQL commands and access or manipulate backend data.
CVE-2026-45247: A PHP Object Injection vulnerability exists in the Mirasvit Cache Warmer extension for Magento and Adobe Commerce. This flaw stems from unsafe deserialization of untrusted user input, enabling unauthenticated attackers to execute arbitrary code on the hosting server.
CVE-2026-40175: A prototype pollution vulnerability affects the Axios HTTP client library. Attackers can exploit this to inject malicious properties into the global JavaScript object prototype, potentially causing application crashes (Denial of Service) or executing unauthorized code depending on the application structure.

Impact

Successful exploitation of these vulnerabilities could allow unauthenticated attackers to execute arbitrary code, manipulate database contents, or induce application crashes, leading to severe operational disruption or complete server compromise. These newly deployed signatures intercept these advanced malicious payloads at the edge before they can interact with vulnerable software configurations.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	Axios - Prototype Pollution - CVE:CVE-2026-40175	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	Drupal - PostgreSQL SQLi - CVE:CVE-2026-9082 - Body	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	Drupal - PostgreSQL SQLi - CVE:CVE-2026-9082 - URI	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - Obfuscated Boolean - Body	N/A	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - Obfuscated Boolean - Headers	N/A	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	Mirasvit Cache Warmer - PHP Object Injection - CVE:CVE-2026-45247	N/A	Block	This is a new detection.

WAF - WAF Release - 2026-05-20

Wed, 20 May 2026 00:00:00 GMT

Key Findings

Existing rule enhancements have been deployed to improve detection resilience against broad classes of web attacks and strengthen behavioral coverage.

Continuous Rule Improvements

We are continuously refining our managed rules to provide more resilient protection and deeper insights into attack patterns. To ensure an optimal security posture, we recommend consistently monitoring the Security Events dashboard and adjusting rule actions as these enhancements are deployed.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	Sitecore - Cache Poisoning - CVE:CVE-2025-53693 Beta	N/A	Block	This rule is merged into the original rule "Sitecore - Cache Poisoning - CVE:CVE-2025-53693" (ID: ).

WAF - WAF Release - 2026-05-15 - Emergency

Fri, 15 May 2026 00:00:00 GMT

This emergency release introduces two new rules to detect nginx heap buffer overflow and heap spray exploitation attempts targeting the rewrite module's is_args stale-state bug (CVE-2026-42945).

Key Findings

CVE-2026-42945: nginx Heap Buffer Overflow via Stale is_args in Rewrite Module

Successful exploitation allows remote attackers to trigger a heap buffer overflow in nginx's rewrite module by sending crafted URIs containing escapable characters. A length/copy pass mismatch in ngx_http_script_copy_capture_code() causes the copy pass to write escaped data into an undersized buffer, leading to heap corruption. This enables denial of service (worker process crash) and, with heap feng shui techniques, potential remote code execution.

We strongly recommend upgrading to nginx 1.30.1 (or later) immediately to address the underlying vulnerability. If you cannot upgrade immediately, avoid rewrite directives with ? in the replacement string followed by set or if referencing capture groups.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	nginx - Remote Code Execution - Buffer Overread - CVE:CVE-2026-42945	N/A	Block	This is a new detection.
Cloudflare Managed Ruleset		N/A	nginx - Remote Code Execution - Heap Spray - CVE:CVE-2026-42945	N/A	Block	This is a new detection.

WAF - WAF Release - 2026-05-11

Mon, 11 May 2026 00:00:00 GMT

Key Findings

Existing rule enhancements have been deployed to improve detection resilience against broad classes of web attacks and strengthen behavioral coverage.

Continuous Rule Improvements

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	Remote Code Execution - Java Deserialization - Body - Beta	Block	Disabled	This is a new detection. This rule is merged into the original rule "Remote Code Execution - Java Deserialization" (ID: ).

Workers, WAF - WAF and framework adapter mitigations for React and Next.js vulnerabilities

Thu, 07 May 2026 12:00:00 GMT

Multiple security vulnerabilities were disclosed by the React team and Vercel affecting React Server Components and Next.js. These include denial of service, middleware and proxy bypass, server-side request forgery, cross-site scripting, and cache poisoning issues across a range of severity levels.

We strongly recommend updating your application and its dependencies immediately. Patched versions are available for React (react-server-dom-webpack, react-server-dom-parcel, and react-server-dom-turbopack 19.0.6, 19.1.7, and 19.2.6) and Next.js (15.5.16 and 16.2.5).

WAF protections

Cloudflare WAF rules deployed in response to prior React Server Component CVEs (CVE-2025-55184 ↗ and CVE-2026-23864 ↗) already provide coverage for the newly disclosed denial-of-service vulnerabilities. These rules are enabled by default with a Block action for all customers using the Cloudflare Managed Ruleset, including Free plan customers using the Free Managed Ruleset.

Ruleset	Rule description	Rule ID	Default action
Cloudflare Managed Ruleset	React - DoS - `CVE-2025-55184` ↗	`2694f1610c0b471393b21aef102ec699`	Block
Cloudflare Managed Ruleset	React - DoS - `CVE-2026-23864` ↗	`aaede80b4d414dc89c443cea61680354`	Block

The existing rules detect the underlying attack patterns generically. As a result, they apply to the new CVE-2026-23870 ↗ denial-of-service vulnerability in Server Components and the corresponding Next.js advisory GHSA-8h8q-6873-q5fj ↗.

Cloudflare is investigating whether WAF rules can be safely and effectively deployed for three of the high-severity advisories: CVE-2026-23870 ↗ / GHSA-8h8q-6873-q5fj ↗, GHSA-267c-6grr-h53f ↗, and GHSA-mg66-mrh9-m8jx ↗. If it is possible to create a managed WAF rule that mitigates these CVEs and does not potentially break application behavior, Cloudflare will add additional managed WAF rules. These rules will be announced through the WAF changelog. Because these vulnerabilities were shared with Cloudflare with minimal advance notice, we are still investigating what WAF mitigations are possible.

Several of the disclosed vulnerabilities are not possible to block in WAF. We strongly recommend updating your applications so they are not purely reliant on WAF mitigations.

Customers on Pro, Business, or Enterprise plans should ensure that Managed Rules are enabled.

Next.js adapters

Vinext: Vinext ↗ is a Vite plugin that reimplements the Next.js API surface. Vinext's latest release is not vulnerable to any of the disclosed CVEs. Vinext's architecture differs from stock Next.js in ways that sidestep the affected code paths. For example, it does not implement the PPR resume protocol, does not expose Pages Router data-route endpoints, and strips internal headers such as x-nextjs-data at request boundaries. As an extra layer of defense, we added a React 19.2.6 or later requirement when running vinext init (PR #1118 ↗, PR #1112 ↗) to prevent accidentally running a vulnerable version of React with Vinext.

OpenNext on Cloudflare: OpenNext is an adapter that lets you deploy Next.js apps to the Cloudflare Workers platform. OpenNext itself is not directly vulnerable to the React denial-of-service CVE, but users must update the Next.js version in their application. The OpenNext team has updated the adapter to further harden against these vectors and released a new version of the Cloudflare adapter. Test fixtures and examples have been updated to use patched versions (PR #1255 ↗).

Summary of disclosed vulnerabilities

Advisory	Severity	Issue	WAF status
`CVE-2026-23870` ↗ / `GHSA-8h8q-6873-q5fj` ↗	High	Denial of service in Server Components	WAF rules in place: `2694f1610c0b471393b21aef102ec699`, `aaede80b4d414dc89c443cea61680354` Cloudflare is investigating additional managed WAF coverage
`GHSA-267c-6grr-h53f` ↗	High	Middleware bypass via segment-prefetch routes	Cloudflare is investigating if this can be safely and effectively mitigated by a managed WAF rule
`GHSA-mg66-mrh9-m8jx` ↗	High	Denial of service via connection exhaustion in Cache Components	Cloudflare is investigating if this can be safely and effectively mitigated by a managed WAF rule
`GHSA-492v-c6pp-mqqv` ↗	High	Middleware bypass via dynamic route parameter injection	Not possible to safely enable a managed WAF rule without potentially breaking application behavior
`GHSA-c4j6-fc7j-m34r` ↗	High	SSRF via WebSocket upgrades	Not possible to safely enable a managed WAF rule without potentially breaking application behavior
`GHSA-36qx-fr4f-26g5` ↗	High	Middleware bypass in Pages Router i18n	Custom WAF rule possible; global managed rule could potentially break application behavior
`GHSA-ffhc-5mcf-pf4q` ↗	Moderate	XSS via CSP nonces	Custom WAF rule possible; global managed rule could potentially break application behavior
`GHSA-gx5p-jg67-6x7h` ↗	Moderate	XSS in `beforeInteractive` scripts	Not possible to safely enable a managed WAF rule without potentially breaking application behavior
`GHSA-h64f-5h5j-jqjh` ↗	Moderate	Denial of service in Image Optimization API	Custom WAF rule possible; global managed rule could potentially break application behavior
`GHSA-wfc6-r584-vfw7` ↗	Moderate	Cache poisoning in RSC responses	Custom WAF rule possible; global managed rule could potentially break application behavior
`GHSA-vfv6-92ff-j949` ↗	Low	Cache poisoning via RSC cache-busting collisions	Not possible to safely enable a managed WAF rule without potentially breaking application behavior
`GHSA-3g8h-86w9-wvmq` ↗	Low	Middleware redirect cache poisoning	Custom WAF rule possible; global managed rule could potentially break application behavior

WAF - WAF Release - 2026-05-07 - Emergency

Thu, 07 May 2026 00:00:00 GMT

This emergency release introduces a new rule to detect Next.js App Router middleware and proxy bypass attempts via segment-prefetch routes (CVE-2026-44575).

Key Findings

CVE-2026-44575: Next.js Middleware / Proxy Bypass in App Router Applications via Segment-Prefetch Routes

Successful exploitation allows unauthenticated attackers to bypass middleware or proxy-based authorization checks in affected Next.js App Router applications. This leads to unauthorized access to protected content, potential exposure of sensitive application data, and compromise of application security boundaries.

We strongly recommend upgrading to Next.js 15.5.16 or 16.2.5 (or later) immediately to address the underlying vulnerability. If you cannot upgrade immediately, enforce authorization in the underlying route or page logic instead of relying solely on middleware.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	Next.js - Middleware Bypass via Invalid RSC Header - CVE:CVE-2026-44575	N/A	Disabled	This is a new detection.

WAF - WAF Release - 2026-05-04

Mon, 04 May 2026 00:00:00 GMT

This week's release focuses on new detections to expand coverage across command injection, SQL injection, PHP object injection, remote code execution, and XSS attack vectors.

Key Findings

Existing rule enhancements have been deployed to improve detection resilience against broad classes of web attacks and strengthen behavioral coverage.

Continuous Rule Improvements

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	XSS, HTML Injection - Object Tag - Body (beta)	Log	Block	This is a new detection. This rule is merged into the original rule "XSS, HTML Injection - Object Tag" (ID: ).
Cloudflare Managed Ruleset	N/A	XSS, HTML Injection - Object Tag - Headers	Log	Block	This is a new detection. The rule previously known as "XSS, HTML Injection - Object Tag - Headers (beta)" is now renamed to "XSS, HTML Injection - Object Tag - Headers".
Cloudflare Managed Ruleset	N/A	XSS, HTML Injection - Object Tag - URI	Log	Block	This is a new detection. The rule previously known as "XSS, HTML Injection - Object Tag - URI (beta)" is now renamed to "XSS, HTML Injection - Object Tag - URI".
Cloudflare Managed Ruleset	N/A	Command Injection - Generic 9 - Body Vector - Beta	N/A	Disabled	This is a new detection. This rule is merged into the original rule "Command Injection - Generic 9 - Body Vector" (ID: )
Cloudflare Managed Ruleset	N/A	Command Injection - Generic 9 - Header Vector - Beta	N/A	Disabled	This is a new detection. This rule is merged into the original rule "Command Injection - Generic 9 - Header Vector" (ID: )
Cloudflare Managed Ruleset	N/A	Command Injection - Generic 9 - URI Vector - Beta	N/A	Disabled	This is a new detection. This rule is merged into the original rule "Command Injection - Generic 9 - URI Vector" (ID: )
Cloudflare Managed Ruleset	N/A	Command Injection - Sleep - Body	N/A	Disabled	This is a new detection. The rule previously known as "Command Injection Sleep" is now renamed to "Command Injection - Sleep - Body".
Cloudflare Managed Ruleset	N/A	Command Injection - Sleep - Headers	N/A	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	Command Injection - Sleep - URI	N/A	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	Fortinet FortiSandbox - Command Injection - CVE:CVE-2026-39808	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	Remote Code Execution - Common Bash Bypass - Headers	N/A	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	Remote Code Execution - Common Bash Bypass - URI	N/A	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	Remote Code Execution - Common Bash Bypass - Body - Beta	N/A	Disabled	This is a new detection. This rule is merged into the original rule "Remote Code Execution - Common Bash Bypass Body" (ID: ). The rule previously known as "Remote Code Execution - Common Bash Bypass Beta" is now renamed to "Remote Code Execution - Common Bash Bypass Body".
Cloudflare Managed Ruleset	N/A	PHP Object Injection - 2 - Body - Beta	N/A	Disabled	This is a new detection. This rule is merged into the original rule "PHP Object Injection - 2" (ID: )
Cloudflare Managed Ruleset	N/A	PHP Object Injection - 2 - Headers	N/A	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	PHP Object Injection - 2 - URI	N/A	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - DROP - 2 - Beta	N/A	Disabled	This is a new detection. This rule is merged into the original rule "SQLi - DROP - 2" (ID: )
Cloudflare Managed Ruleset	N/A	SQLi - DROP - 2 - Headers	N/A	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - DROP - 2 - URI	N/A	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	SmarterMail - Remote Code Execution - CVE:CVE-2026-24423	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - SELECT Expression - Body	Block	Disabled	Action changed
Cloudflare Managed Ruleset	N/A	SQLi - String Concatenation - URI	Block	Disabled	Action changed

WAF - WAF Release - 2026-04-30 - Emergency

Thu, 30 Apr 2026 00:00:00 GMT

This emergency release introduces a new rule to block a cPanel & WHM Authentication Bypass related to CVE-2026-41940.

Key Findings

CVE-2026-41940: A critical authentication bypass vulnerability in cPanel & WHM allows unauthenticated remote attackers to bypass authentication mechanisms and gain unauthorized administrative access to the web hosting control panel. This vulnerability affects the session validation logic, enabling attackers to craft malicious requests that circumvent normal authentication checks.

Impact

Successful exploitation allows unauthenticated attackers to gain administrative control over affected cPanel & WHM installations. This leads to complete server compromise, potential theft or manipulation of hosted data, and significant service disruption across managed environments.

We strongly recommend applying official vendor patches for cPanel & WHM immediately to address the underlying vulnerability.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	cPanel - Auth Bypass - CVE:CVE-2026-41940	N/A	Block	This is a new detection.

WAF - WAF Release - 2026-04-27

Mon, 27 Apr 2026 00:00:00 GMT

This week's release focuses on new improvements to enhance coverage.

Key Findings

Existing rule enhancements have been deployed to improve detection resilience against broad classes of web attacks and strengthen behavioral coverage.

Continuous Rule Improvements

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	PostgreSQL - SQLi - COPY - Beta	Log	Block	This is a new detection. This rule is merged into the original rule "PostgreSQL - SQLi - COPY - Body (ID: ). The rule previously known as "PostgreSQL - SQLi - COPY" is now renamed to "PostgreSQL - SQLi - COPY - Body".
Cloudflare Managed Ruleset	N/A	PostgreSQL - SQLi - COPY - Headers	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	PostgreSQL - SQLi - COPY - URI	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - AND/OR MAKE_SET/ELT - Beta	Log	Block	This is a new detection. This rule is merged into the original rule "SQLi - AND/OR MAKE_SET/ELT - Body" (ID: ). The rule previously known as "SQLi - AND/OR MAKE_SET/ELT" is now renamed to "SQLi - AND/OR MAKE_SET/ELT - Body".
Cloudflare Managed Ruleset	N/A	SQLi - AND/OR MAKE_SET/ELT - Headers	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - AND/OR MAKE_SET/ELT - URI	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - Common Patterns - Beta	Log	Block	This is a new detection. This rule is merged into the original rule "SQLi - Common Patterns - Body" (ID: ). The rule previously known as "SQLi - Common Patterns" is now renamed to "SQLi - Common Patterns - Body".
Cloudflare Managed Ruleset	N/A	SQLi - Common Patterns - Headers	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - Common Patterns - URI	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - Equation - Beta	Log	Block	This is a new detection. This rule is merged into the original rule "SQLi - Equation - Body" (ID: ). The rule previously known as "SQLi - Equation" is now renamed to "SQLi - Equation - Body".
Cloudflare Managed Ruleset	N/A	SQLi - Equation - Headers	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - Equation - URI	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - AND/OR Digit Operator Digit - Beta	Log	Block	This is a new detection. This rule is merged into the original rule "SQLi - AND/OR Digit Operator Digit - Body" (ID: ). The rule previously known as "SQLi - AND/OR Digit Operator Digit" is now renamed to "SQLi - AND/OR Digit Operator Digit - Body".
Cloudflare Managed Ruleset	N/A	SQLi - AND/OR Digit Operator Digit - Headers	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - AND/OR Digit Operator Digit - URI	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - Benchmark Function - Beta	Log	Block	This is a new detection. This rule is merged into the original rule "SQLi - Benchmark Function - Body" (ID: ). The rule previously known as "SQLi - Benchmark Function" is now renamed to "SQLi - Benchmark Function - Body".
Cloudflare Managed Ruleset	N/A	SQLi - Benchmark Function - Headers	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - Benchmark Function - URI	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - Comparison - Beta	Log	Block	This is a new detection. This rule is merged into the original rule "SQLi - Comparison - Body" (ID: ). The rule previously known as "SQLi - Comparison" is now renamed to "SQLi - Comparison - Body".
Cloudflare Managed Ruleset	N/A	SQLi - Comparison - Headers	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - Comparison - URI	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - String Concatenation - Body - Beta	Log	Block	This is a new detection. This rule is merged into the original rule "SQLi - String Concatenation - Headers" (ID: ).The rule previously known as "SQLi - String Concatenation - Headers" is now renamed to "SQLi - String Concatenation - Body".
Cloudflare Managed Ruleset	N/A	SQLi - String Concatenation - Headers	Log	Block	This is a new detection.(Former Id was )
Cloudflare Managed Ruleset	N/A	SQLi - String Concatenation - URI	Log	Block	This is a new detection. (Former Id was )
Cloudflare Managed Ruleset	N/A	SQLi - SELECT Expression - Beta	Log	Block	This is a new detection. This rule is merged into the original rule "SQLi - SELECT Expression - Body" (ID: ). The rule previously known as "SQLi - SELECT Expression" is now renamed to "SQLi - SELECT Expression - Body".
Cloudflare Managed Ruleset	N/A	SQLi - SELECT Expression - Headers	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - SELECT Expression - URI	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - ORD and ASCII - Beta	Log	Block	This is a new detection. This rule is merged into the original rule "SQLi - ORD and ASCII- Body" (ID: ). The rule previously known as "SQLi - ORD and ASCII" is now renamed to "SQLi - ORD and ASCII- Body".
Cloudflare Managed Ruleset	N/A	SQLi - ORD and ASCII - URI	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - ORD and ASCII - Headers	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - Destructive Operations	Log	Block	This is a new detection.

WAF - WAF Release - 2026-04-21

Tue, 21 Apr 2026 00:00:00 GMT

This week's release introduces a new detection for a Remote Code Execution (RCE) vulnerability in Apache ActiveMQ (CVE-2026-34197) and an updated signature for Magento 2 - Unrestricted File Upload. Alongside these detections, we are continuing our work on rule refinements to provide deeper security insights for our customers.

Key Findings

Apache ActiveMQ (CVE-2026-34197): A vulnerability in Apache ActiveMQ allows an unauthenticated, remote attacker to execute arbitrary code. This flaw occurs during the processing of specially crafted network packets, leading to potential full system compromise.
Magento 2 - Unrestricted File Upload - 2: This is a follow-up enhancement to our existing protections for Magento and Adobe Commerce.

Impact

Successful exploitation of these vulnerabilities could allow unauthenticated attackers to execute arbitrary code or gain full administrative control over affected servers. We strongly recommend applying official vendor patches for Apache ActiveMQ and Magento to address the underlying vulnerabilities.

Continuous Rule Improvements

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	Command Injection - Generic 8 - uri	Log	Block	This is a new detection. Previous description was "Command Injection - Generic 8 - uri - Beta"
Cloudflare Managed Ruleset	N/A	Command Injection - Generic 8 - body - Beta	Disabled	Disabled	This is a new detection. This rule is merged into the original rule "Command Injection - Generic 8 - body" (ID: ). The rule previously known as "Command Injection - Generic 8" is now renamed to "Command Injection - Generic 8 - body".
Cloudflare Managed Ruleset	N/A	MySQL - SQLi - Executable Comment - Beta	Log	Block	This is a new detection. This rule is merged into the original rule "MySQL - SQLi - Executable Comment - Body" (ID: ) The rule previously known as "MySQL - SQLi - Executable Comment" is now renamed to "MySQL - SQLi - Executable Comment - Body".
Cloudflare Managed Ruleset	N/A	MySQL - SQLi - Executable Comment - Headers	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	MySQL - SQLi - Executable Comment - URI	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	Magento 2 - Unrestricted file upload - 2	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	Apache ActiveMQ - Remote Code Execution - CVE:CVE-2026-34197	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - Sleep Function - Beta	Log	Block	This is a new detection. This rule is merged into the original rule "SQLi - Sleep Function" (ID: )
Cloudflare Managed Ruleset	N/A	SQLi - Sleep Function - Headers	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - Sleep Function - URI	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - Probing - uri	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - Probing - header	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - Probing - body	Disabled	Disabled	This is a new detection. This rule is merged into the original rule "SQLi - Probing" (ID: )
Cloudflare Managed Ruleset	N/A	SQLi - Probing 2	Disabled	Disabled	This rule had duplicate detection logic and has been deprecated.
Cloudflare Managed Ruleset	N/A	SQLi - UNION in MSSQL - Body	Disabled	Disabled	This rule has been renamed to differentiate from "SQLi - UNION in MSSQL" (ID: ) and contains updated rule logic.
Cloudflare Managed Ruleset	N/A	SQLi - UNION - 3	Disabled	Disabled	This rule had duplicate detection logic and has been deprecated.
Cloudflare Managed Ruleset	N/A	XSS, HTML Injection - Embed Tag - URI	Disabled	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	XSS, HTML Injection - Embed Tag - Headers	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	XSS, HTML Injection - IFrame Tag - Src and Srcdoc Attributes - Headers	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	XSS, HTML Injection - Link Tag - Headers	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	XSS, HTML Injection - Link Tag - URI	Disabled	Disabled	This is a new detection.

WAF - WAF Release - 2026-04-15

Wed, 15 Apr 2026 00:00:00 GMT

This week's release introduces a new detection for a critical Remote Code Execution (RCE) vulnerability in Mesop (CVE-2026-33057), alongside protections for high-impact vulnerabilities in Cisco Secure Firewall Management Center (CVE-2026-20079) and FortiClient EMS (CVE-2026-21643). Additionally, this release includes an update to our existing React Server DoS coverage to address recently identified resource exhaustion vectors (CVE-2026-23869).

Key Findings

Cisco Secure FMC (CVE-2026-20079): A vulnerability in the web-based management interface of Cisco Secure Firewall Management Center (FMC) that allows an unauthenticated, remote attacker to execute arbitrary commands or bypass security filters.
FortiClient EMS (CVE-2026-21643): A critical vulnerability in the FortiClient EMS permitting unauthorized access or administrative configuration manipulation via crafted HTTP requests.
Mesop (CVE-2026-33057): A vulnerability in the Mesop Python-based UI framework where unauthenticated attackers can execute arbitrary code by sending specially crafted, Base64-encoded payloads in the request body.

Impact

Successful exploitation of these vulnerabilities could allow unauthenticated attackers to execute arbitrary code, gain administrative control over network management infrastructure, or trigger server-side resource exhaustion. Administrators are strongly encouraged to apply official vendor updates.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	Cisco Secure FMC - RCE via upgradeReadinessCall - CVE:CVE-2026-20079	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	FortiClient EMS - Pre-Auth SQL Injection - CVE:CVE-2026-21643	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	Mesop - Remote Code Execution - Base64 Payload - CVE:CVE-2026-33057	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	React Server - DOS - CVE:CVE-2026-23864 - 1 - Beta	Log	Block	This rule has been merged into the original rule "React Server - DOS - CVE:CVE-2026-23864 - 1" (ID: )
Cloudflare Managed Ruleset	N/A	XSS, HTML Injection - Link Tag - URI (beta)	N/A	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	XSS, HTML Injection - Embed Tag - URI (beta)	N/A	Disabled	This is a new detection.

WAF - Email obfuscation decode script is now non-render-blocking

Tue, 14 Apr 2026 00:00:00 GMT

The decode script injected by Email Address Obfuscation now loads with the defer attribute. This means the script no longer blocks page rendering. It downloads in parallel with HTML parsing and executes after the document is fully parsed, before the DOMContentLoaded event.

This improves page loading performance, contributing to better Core Web Vitals, for all zones with Email Address Obfuscation on. No action is required.

If you have custom JavaScript that depends on email addresses being decoded at a specific point during page load, note that the decode script now executes after HTML parsing completes rather than inline during parsing.

WAF - WAF Release - 2026-04-07

Tue, 07 Apr 2026 00:00:00 GMT

This week's release introduces new detections for a critical Remote Code Execution (RCE) vulnerability in MCP Server (CVE-2026-23744), alongside targeted protection for an authentication bypass vulnerability in SolarWinds products (CVE-2025-40552). Additionally, this release includes a new generic detection rule designed to identify and block Cross-Site Scripting (XSS) injection attempts leveraging "OnEvent" handlers within HTTP cookies.

Key Findings

MCP Server (CVE-2026-23744): A vulnerability in the Model Context Protocol (MCP) server implementation where malformed input payloads can trigger a memory corruption state, allowing for arbitrary code execution.
SolarWinds (CVE-2025-40552): A critical flaw in the authentication module allows unauthenticated attackers to bypass security filters and gain unauthorized access to the management console due to improper identity token validation.
XSS OnEvents Cookies: This generic rule identifies malicious event handlers (such as onload or onerror) embedded within HTTP cookie values.

Impact

Successful exploitation of the MCP Server and SolarWinds vulnerabilities could allow unauthenticated attackers to execute arbitrary code or gain administrative control, leading to a full system takeover. Additionally, the new generic XSS detection prevents attackers from leveraging browser event handlers in cookies to hijack user sessions or execute malicious scripts.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	Generic Rules - Command Execution - 5 - Body	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	Generic Rules - Command Execution - 5 - Header	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	Generic Rules - Command Execution - 5 - URI	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	MCP Server - Remote Code Execution - CVE:CVE-2026-23744	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	XSS - OnEvents - Cookies	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - Evasion - Body	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - Evasion - Headers	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - Evasion - URI	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - LIKE 3 - Body	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - LIKE 3 - URI	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - UNION - 2 - Body	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - UNION - 2 - URI	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	SolarWinds - Auth Bypass - CVE:CVE-2025-40552	Log	Block	This is a new detection.

WAF - WAF Release - 2026-03-30

Mon, 30 Mar 2026 00:00:00 GMT

This week's release introduces new detections for a critical authentication bypass vulnerability in Fortinet products (CVE-2025-59718), alongside three new generic detection rules designed to identify and block HTTP Parameter Pollution attempts. Additionally, this release includes targeted protection for a high-impact unrestricted file upload vulnerability in Magento and Adobe Commerce.

Key Findings

CVE-2025-59718: An improper cryptographic signature verification vulnerability in Fortinet FortiOS, FortiProxy, and FortiSwitchManager. This may allow an unauthenticated attacker to bypass the FortiCloud SSO login authentication using a maliciously crafted SAML message, if that feature is enabled on the device.
Magento 2 - Unrestricted File Upload: A critical flaw in Magento and Adobe Commerce allows unauthenticated attackers to bypass security checks and upload malicious files to the server, potentially leading to Remote Code Execution (RCE).

Impact

Successful exploitation of the Fortinet and Magento vulnerabilities could allow unauthenticated attackers to gain administrative control or deploy webshells, leading to complete server compromise and data theft.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	Generic Rules - Parameter Pollution - Body	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	Generic Rules - Parameter Pollution - Header - Form	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	Generic Rules - Parameter Pollution - URI	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	Magento 2 - Unrestricted file upload	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	Fortinet FortiCloud SSO - Authentication Bypass - CVE:CVE-2025-59718	Log	Block	This is a new detection.

WAF - WAF Release - 2026-03-23

Mon, 23 Mar 2026 00:00:00 GMT

This week's release focuses on new improvements to enhance coverage.

Key Findings

Existing rule enhancements have been deployed to improve detection resilience against broad classes of web attacks and strengthen behavioral coverage.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	Command Injection - Generic 9 - URI Vector	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	Command Injection - Generic 9 - Header Vector	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	Command Injection - Generic 9 - Body Vector	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	PHP, vBulletin, jQuery File Upload - Code Injection, Dangerous File Upload - CVE:CVE-2018-9206, CVE:CVE-2019-17132 (beta)	Log	Block	This rule has been merged into the original rule "PHP, vBulletin, jQuery File Upload - Code Injection, Dangerous File Upload - CVE:CVE-2018-9206, CVE:CVE-2019-17132" (ID: )

WAF - WAF Release - 2026-03-12 - Emergency

Thu, 12 Mar 2026 00:00:00 GMT

This week's release introduces new detections for vulnerabilities in Ivanti Endpoint Manager Mobile (CVE-2026-1281 and CVE-2026-1340), alongside a new generic detection rule designed to identify and block Cross-Site Scripting (XSS) injection attempts within the Content-Security-Policy (CSP) HTTP request header.

Key Findings

CVE-2026-1281 & CVE-2026-1340: Ivanti Endpoint Manager Mobile processes HTTP requests through Apache RevwriteMap directives that pass user-controlled input to Bash scripts (/mi/bin/map-appstore-url and /mi/bin/map-aft-store-url). Bash scripts do not sanitize user input and are vulnerable to shell arithmetic expansion thereby allowing attackers to achieve unauthenticated remote code execution.
Generic XSS in CSP Header: This rule identifies malicious payloads embedded within the request's Content-Security-Policy header. It specifically targets scenarios where web frameworks or applications trust and extract values directly from the CSP header in the incoming request without sufficient validation. Attackers can provide crafted header values to inject scripts or malicious directives that are subsequently processed by the server.

Impact

Successful exploitation of Ivanti EPMM vulnerability allows unauthenticated remote code execution and generic XSS in CSP header allows attackers to inject malicious scripts during page rendering. In environments using server-side caching, this poisoned XSS content can subsequently be cached and automatically served to all visitors.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	Ivanti EPMM - Code Injection - CVE:CVE-2026-1281 CVE:CVE-2026-1340	Log	Block	This is a new detection.
Cloudflare Managed Ruleset		N/A	Anomaly:Header:Content-Security-Policy	N/A	Block	This is a new detection.

WAF - WAF Release - 2026-03-02

Mon, 02 Mar 2026 00:00:00 GMT

This week's release introduces new detections for vulnerabilities in SmarterTools SmarterMail (CVE-2025-52691 and CVE-2026-23760), alongside improvements to an existing Command Injection (nslookup) detection to enhance coverage.

Key Findings

CVE-2025-52691: SmarterTools SmarterMail mail server is vulnerable to Arbitrary File Upload, allowing an unauthenticated attacker to upload files to any location on the mail server, potentially enabling remote code execution.
CVE-2026-23760: SmarterTools SmarterMail versions prior to build 9511 contain an authentication bypass vulnerability in the password reset API permitting unaunthenticated to reset system administrator accounts failing to verify existing password or reset token.

Impact

Successful exploitation of these SmarterMail vulnerabilities could lead to full system compromise or unauthorized administrative access to mail servers. Administrators are strongly encouraged to apply vendor patches without delay.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	SmarterMail - Arbitrary File Upload - CVE-2025-52691	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	SmarterMail - Authentication Bypass - CVE-2026-23760	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	Command Injection - Nslookup - Beta	Log	Block	This rule is merged into the original rule "Command Injection - Nslookup" (ID: )

WAF - WAF Release - 2026-02-16

Mon, 16 Feb 2026 00:00:00 GMT

This week’s release introduces new detections for CVE-2025-68645 and CVE-2025-31125.

Key Findings

CVE-2025-68645: A Local File Inclusion (LFI) vulnerability in the Webmail Classic UI of Zimbra Collaboration Suite (ZCS) 10.0 and 10.1 allows unauthenticated remote attackers to craft requests to the /h/rest endpoint, improperly influence internal dispatching, and include arbitrary files from the WebRoot directory.
CVE-2025-31125: Vite, the JavaScript frontend tooling framework, exposes content of non-allowed files via ?inline&import when its development server is network-exposed, enabling unauthorized attackers to read arbitrary files and potentially leak sensitive information.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	Zimbra - Local File Inclusion - CVE:CVE-2025-68645	Log	Block	This is a new detection.
Cloudflare Managed Ruleset		N/A	Vite - WASM Import Path Traversal - CVE:CVE-2025-31125	Log	Block	This is a new detection.

WAF - WAF Release - 2026-02-10

Tue, 10 Feb 2026 00:00:00 GMT

This week’s release changes the rule action from BLOCK to Disabled for Anomaly:Header:User-Agent - Fake Google Bot.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	Anomaly:Header:User-Agent - Fake Google Bot	Enabled	Disabled	We are changing the action for this rule from BLOCK to Disabled

WAF - WAF Release - 2026-02-02

Mon, 02 Feb 2026 00:00:00 GMT

This week’s release introduces new detections for CVE-2025-64459 and CVE-2025-24893.

Key Findings

CVE-2025-64459: Django versions prior to 5.1.14, 5.2.8, and 4.2.26 are vulnerable to SQL injection via crafted dictionaries passed to QuerySet methods and the Q() class.
CVE-2025-24893: XWiki allows unauthenticated remote code execution through crafted requests to the SolrSearch endpoint, affecting the entire installation.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	XWiki - Remote Code Execution - CVE:CVE-2025-24893 2	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	Django SQLI - CVE:CVE-2025-64459	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	NoSQL, MongoDB - SQLi - Comparison - 2	Block	Block	Rule metadata description refined. Detection unchanged.

WAF - WAF Release - 2026-01-26

Mon, 26 Jan 2026 00:00:00 GMT

This week’s release introduces new detections for denial-of-service attempts targeting React CVE-2026-23864 (https://www.cve.org/CVERecord?id=CVE-2026-23864 ↗).

Key Findings

CVE-2026-23864 (https://www.cve.org/CVERecord?id=CVE-2026-23864 ↗) affects react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack packages.
Attackers can send crafted HTTP requests to Server Function endpoints, causing server crashes, out-of-memory exceptions, or excessive CPU usage.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	React Server - DOS - CVE:CVE-2026-23864 - 1	N/A	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	React Server - DOS - CVE:CVE-2026-23864 - 2	N/A	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	React Server - DOS - CVE:CVE-2026-23864 - 3	N/A	Block	This is a new detection.

WAF - WAF Release - 2026-01-20

Tue, 20 Jan 2026 00:00:00 GMT

This week's release focuses on improvements to existing detections to enhance coverage.

Key Findings

Existing rule enhancements have been deployed to improve detection resilience against SQL injection.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	SQLi - Comment - Beta	Log	Block	This rule is merged into the original rule "SQLi - Comment" (ID: )
Cloudflare Managed Ruleset		N/A	SQLi - Comparison - Beta	Log	Block	This rule is merged into the original rule "SQLi - Comparison" (ID: )

WAF - WAF Release - 2026-01-15

Thu, 15 Jan 2026 00:00:00 GMT

This week's release focuses on improvements to existing detections to enhance coverage.

Key Findings

Existing rule enhancements have been deployed to improve detection resilience against SQL Injection.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	SQLi - String Function - Beta	Log	Block	This rule is merged into the original rule "SQLi - String Function" (ID: )
Cloudflare Managed Ruleset		N/A	SQLi - Sub Query - Beta	Log	Block	This rule is merged into the original rule "SQLi - Sub Query" (ID: )

WAF - WAF Release - 2026-01-12

Mon, 12 Jan 2026 00:00:00 GMT

This week's release focuses on improvements to existing detections to enhance coverage.

Key Findings

Existing rule enhancements have been deployed to improve detection resilience against SQL Injection.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	SQLi - AND/OR MAKE_SET/ELT - Beta	Log	Block	This rule is merged into the original rule "SQLi - AND/OR MAKE_SET/ELT" (ID: )
Cloudflare Managed Ruleset		N/A	SQLi - Benchmark Function - Beta	Log	Block	This rule is merged into the original rule "SQLi - Benchmark Function" (ID: )

WAF - WAF Release - 2025-12-18

Thu, 18 Dec 2025 00:00:00 GMT

This week's release focuses on improvements to existing detections to enhance coverage.

Key Findings

Existing rule enhancements have been deployed to improve detection resilience against broad classes of web attacks and strengthen behavioral coverage.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	Atlassian Confluence - Code Injection - CVE:CVE-2021-26084 - Beta	Log	Block	This rule is merged into the original rule "Atlassian Confluence - Code Injection - CVE:CVE-2021-26084" (ID: )
Cloudflare Managed Ruleset	N/A	PostgreSQL - SQLi - Copy - Beta	Log	Block	This rule is merged into the original rule "PostgreSQL - SQLi - COPY" (ID: )
Cloudflare Managed Ruleset	N/A	Generic Rules - Command Execution - Body	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	Generic Rules - Command Execution - Header	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	Generic Rules - Command Execution - URI	Log	Disabled	This is a new detection.
Cloudflare Managed Ruleset	N/A	SQLi - Tautology - URI - Beta	Log	Block	This rule is merged into the original rule "SQLi - Tautology - URI" (ID: )
Cloudflare Managed Ruleset	N/A	SQLi - WaitFor Function - Beta	Log	Block	This rule is merged into the original rule "SQLi - WaitFor Function" (ID: )
Cloudflare Managed Ruleset	N/A	SQLi - AND/OR Digit Operator Digit 2 - Beta	Log	Block	This rule is merged into the original rule "SQLi - AND/OR Digit Operator Digit" (ID: )
Cloudflare Managed Ruleset	N/A	SQLi - Equation 2 - Beta	Log	Block	This rule is merged into the original rule "SQLi - Equation" (ID: )

WAF - WAF Release - 2025-12-11 - Emergency

Thu, 11 Dec 2025 00:00:00 GMT

This emergency release introduces rules for CVE-2025-55183 and CVE-2025-55184, targeting server-side function exposure and resource-exhaustion patterns, respectively.

Key Findings

Added coverage for Leaking Server Functions (CVE-2025-55183) and React Function DoS detection (CVE-2025-55184).

Impact

These updates strengthen protection for server-function abuse techniques (CVE-2025-55183, CVE-2025-55184) that may expose internal logic or disrupt application availability.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	React - Leaking Server Functions - CVE:CVE-2025-55183	N/A	Block	This was labeled as Generic - Server Function Source Code Exposure.
Cloudflare Free Ruleset	N/A	React - Leaking Server Functions - CVE:CVE-2025-55183	N/A	Block	This was labeled as Generic - Server Function Source Code Exposure.
Cloudflare Managed Ruleset	N/A	React - DoS - CVE:CVE-2025-55184	N/A	Disabled	This was labeled as Generic – Server Function Resource Exhaustion.

WAF - WAF Release - 2025-12-10 - Emergency

Wed, 10 Dec 2025 00:00:00 GMT

This additional week's emergency release introduces improvements to our existing rule for React – Remote Code Execution – CVE-2025-55182 - 2, along with two new generic detections covering server-side function exposure and resource-exhaustion patterns.

Key Findings

Enhanced detection logic for React – RCE – CVE-2025-55182, added Generic – Server Function Source Code Exposure, and added Generic – Server Function Resource Exhaustion.

Impact

These updates strengthen protection against React RCE exploitation attempts and broaden coverage for common server-function abuse techniques that may expose internal logic or disrupt application availability.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	React - Remote Code Execution - CVE:CVE-2025-55182 - 2	N/A	Block	This is an improved detection.
Cloudflare Free Ruleset	N/A	React - Remote Code Execution - CVE:CVE-2025-55182 - 2	N/A	Block	This is an improved detection.
Cloudflare Managed Ruleset	N/A	Generic - Server Function Source Code Exposure	N/A	Block	This is a new detection.
Cloudflare Free Ruleset	N/A	Generic - Server Function Source Code Exposure	N/A	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	Generic - Server Function Resource Exhaustion	N/A	Disabled	This is a new detection.

WAF - Increased WAF payload limit for all plans

Fri, 05 Dec 2025 00:00:00 GMT

Cloudflare WAF now inspects request-payload size of up to 1 MB across all plans to enhance our detection capabilities for React RCE (CVE-2025-55182).

Key Findings

React payloads commonly have a default maximum size of 1 MB. Cloudflare WAF previously inspected up to 128 KB on Enterprise plans, with even lower limits on other plans.

Update: We later reinstated the maximum request-payload size the Cloudflare WAF inspects. Refer to Updating the WAF maximum payload values for details.

WAF - Updating the WAF maximum payload values

Fri, 05 Dec 2025 00:00:00 GMT

We are reinstating the maximum request-payload size the Cloudflare WAF inspects, with WAF on Enterprise zones inspecting up to 128 KB.

Key Findings

On December 5, 2025, we initially attempted to increase the maximum WAF payload limit to 1 MB across all plans. However, an automatic rollout for all customers proved impractical because the increase led to a surge in false positives for existing managed rules.

This issue was particularly notable within the Cloudflare Managed Ruleset and the Cloudflare OWASP Core Ruleset, impacting customer traffic.

Impact

Customers on paid plans can increase the limit to 1 MB for any of their zones by contacting Cloudflare Support. Free zones are already protected up to 1 MB and do not require any action.

WAF - WAF Release - 2025-12-03 - Emergency

Wed, 03 Dec 2025 00:00:00 GMT

The WAF rule deployed yesterday to block unsafe deserialization-based RCE has been updated. The rule description now reads “React – RCE – CVE-2025-55182”, explicitly mapping to the recently disclosed React Server Components vulnerability. Detection logic remains unchanged.

Key Findings

Rule description updated to reference React – RCE – CVE-2025-55182 while retaining existing unsafe-deserialization detection.

Impact

Improved classification and traceability with no change to coverage against remote code execution attempts.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	React - RCE - CVE:CVE-2025-55182	N/A	Block	Rule metadata description changed. Detection unchanged.
Cloudflare Free Ruleset		N/A	React - RCE - CVE:CVE-2025-55182	N/A	Block	Rule metadata description changed. Detection unchanged.

WAF - WAF Release - 2025-12-02 - Emergency

Tue, 02 Dec 2025 00:00:00 GMT

This week's emergency release introduces a new rule to block a critical RCE vulnerability in widely-used web frameworks through unsafe deserialization patterns.

Key Findings

New WAF rule deployed for RCE Generic Framework to block malicious POST requests containing unsafe deserialization patterns. If successfully exploited, this vulnerability allows attackers with network access via HTTP to execute arbitrary code remotely.

Impact

Successful exploitation allows unauthenticated attackers to execute arbitrary code remotely through crafted serialization payloads, enabling complete system compromise, data exfiltration, and potential lateral movement within affected environments.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	RCE Generic - Framework	N/A	Block	This is a new detection.
Cloudflare Free Ruleset		N/A	RCE Generic - Framework	N/A	Block	This is a new detection.

WAF - WAF Release - 2025-12-01

Mon, 01 Dec 2025 00:00:00 GMT

This week’s release introduces new detections for remote code execution attempts targeting Monsta FTP (CVE-2025-34299), alongside improvements to an existing XSS detection to enhance coverage.

Key Findings

CVE-2025-34299 is a critical remote code execution flaw in Monsta FTP, arising from improper handling of user-supplied parameters within the file-handling interface. Certain builds allow crafted requests to bypass sanitization and reach backend PHP functions that execute arbitrary commands. Attackers can send manipulated parameters through the web panel to trigger command execution within the application’s runtime environment.

Impact

If exploited, the vulnerability enables full remote command execution on the underlying server, allowing takeover of the hosting environment, unauthorized file access, and potential lateral movement. As the flaw can be triggered without authentication on exposed Monsta FTP instances, it represents a severe risk for publicly reachable deployments.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	Monsta FTP - Remote Code Execution - CVE:CVE-2025-34299	Log	Block	This is a new detection
Cloudflare Managed Ruleset		N/A	XSS - JS Context Escape - Beta	Log	Block	This rule is merged into the original rule "XSS - JS Context Escape" (ID: )

WAF - WAF Release - 2025-11-24

Mon, 24 Nov 2025 00:00:00 GMT

This week highlights enhancements to detection signatures improving coverage for vulnerabilities in FortiWeb, linked to CVE-2025-64446, alongside new detection logic expanding protection against PHP Wrapper Injection techniques.

Key Findings

This vulnerability enables an unauthenticated attacker to bypass access controls by abusing the CGIINFO header. The latest update strengthens detection logic to ensure a reliable identification of crafted requests attempting to exploit this flaw.

Impact

FortiWeb (CVE-2025-64446): Exploitation allows a remote unauthenticated adversary to circumvent authentication mechanisms by sending a manipulated CGIINFO header to FortiWeb’s backend CGI handler. Successful exploitation grants unintended access to restricted administrative functionality, potentially enabling configuration tampering or system-level actions.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	FortiWeb - Authentication Bypass via CGIINFO Header - CVE:CVE-2025-64446	Log	Block	This is a new detection
Cloudflare Managed Ruleset	N/A	PHP Wrapper Injection - Body - Beta	Log	Disabled	This rule has been merged into the original rule "PHP Wrapper Injection - Body" (ID:)
Cloudflare Managed Ruleset	N/A	PHP Wrapper Injection - URI - Beta	Log	Disabled	This rule has been merged into the original rule "PHP Wrapper Injection - URI" (ID:)

WAF - WAF Release - 2025-11-21

Fri, 21 Nov 2025 00:00:00 GMT

This week’s release introduces a critical detection for CVE-2025-61757, a vulnerability in the Oracle Identity Manager REST WebServices component.

Key Findings

This flaw allows unauthenticated attackers with network access over HTTP to fully compromise the Identity Manager, potentially leading to a complete takeover.

Impact

Oracle Identity Manager (CVE-2025-61757): Exploitation could allow an unauthenticated remote attacker to bypass security checks by sending specially crafted requests to the application's message processor. This enables the creation of arbitrary employee accounts, which can be leveraged to modify system configurations and achieve full system compromise.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	Oracle Identity Manager - Pre-Auth RCE - CVE:CVE-2025-61757	N/A	Block	This is a new detection.

WAF - WAF Release - 2025-11-17

Mon, 17 Nov 2025 00:00:00 GMT

This week highlights enhancements to detection signatures improving coverage for vulnerabilities in DELMIA Apriso, linked to CVE-2025-6205.

Key Findings

This vulnerability allows unauthenticated attackers to gain privileged access to the application. The latest update provides enhanced detection logic for resilient protection against exploitation attempts.

Impact

DELMIA Apriso (CVE-2025-6205): Exploitation could allow an unauthenticated remote attacker to bypass security checks by sending specially crafted requests to the application's message processor. This enables the creation of arbitrary employee accounts, which can be leveraged to modify system configurations and achieve full system compromise.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	DELMIA Apriso - Auth Bypass - CVE:CVE-2025-6205	Log	Block	This is a new detection.
Cloudflare Managed Ruleset	N/A	PHP Wrapper Injection - Body	N/A	Disabled	Rule metadata description refined. Detection unchanged.
Cloudflare Managed Ruleset	N/A	PHP Wrapper Injection - URI	N/A	Disabled	Rule metadata description refined. Detection unchanged.

WAF - WAF Release - 2025-11-10

Mon, 10 Nov 2025 00:00:00 GMT

This week’s release introduces new detections for Prototype Pollution across three common vectors: URI, Body, and Header/Form.

Key Findings

These attacks can affect both API and web applications by altering normal behavior or bypassing security controls.

Impact

Exploitation may allow attackers to change internal logic or cause unexpected behavior in applications using JavaScript or Node.js frameworks. Developers should sanitize input keys and avoid merging untrusted data structures.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	Generic Rules - Prototype Pollution - URI	Log	Disabled	This is a new detection
Cloudflare Managed Ruleset	N/A	Generic Rules - Prototype Pollution - Body	Log	Disabled	This is a new detection
Cloudflare Managed Ruleset	N/A	Generic Rules - Prototype Pollution - Header - Form	Log	Disabled	This is a new detection

WAF - WAF Release - 2025-11-05 - Emergency

Wed, 05 Nov 2025 00:00:00 GMT

This week’s emergency release introduces a new detection signature that enhances coverage for a critical vulnerability in the React Native Metro Development Server, tracked as CVE-2025-11953.

Key Findings

The Metro Development Server exposes an HTTP endpoint that is vulnerable to OS command injection (CWE-78). An unauthenticated network attacker can send a crafted request to this endpoint and execute arbitrary commands on the host running Metro. The vulnerability affects Metro/cli-server-api builds used by React Native Community CLI in pre-patch development releases.

Impact

Successful exploitation of CVE-2025-11953 may result in remote command execution on developer workstations or CI/build agents, leading to credential and secret exposure, source tampering, and potential lateral movement into internal networks. Administrators and developers are strongly advised to apply the vendor's patches and restrict Metro’s network exposure to reduce this risk.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	React Native Metro - Command Injection - CVE:CVE-2025-11953	N/A	Block	This is a New Detection

WAF - WAF Release - 2025-11-03

Mon, 03 Nov 2025 00:00:00 GMT

This week highlights enhancements to detection signatures improving coverage for vulnerabilities in Adobe Commerce and Magento Open Source, linked to CVE-2025-54236.

Key Findings

This vulnerability allows unauthenticated attackers to take over customer accounts through the Commerce REST API and, in certain configurations, may lead to remote code execution. The latest update provides enhanced detection logic for resilient protection against exploitation attempts.

Impact

Adobe Commerce (CVE-2025-54236): Exploitation may allow attackers to hijack sessions, execute arbitrary commands, steal data, and disrupt storefronts, resulting in confidentiality and integrity risks for merchants. Administrators are strongly encouraged to apply vendor patches without delay.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		100774C	Adobe Commerce - Remote Code Execution - CVE:CVE-2025-54236	Log	Block	This is an improved detection.

WAF - WAF Release - 2025-10-30 - Emergency

Thu, 30 Oct 2025 00:00:00 GMT

This week’s release introduces a new detection signature that enhances coverage for a critical vulnerability in Oracle E-Business Suite, tracked as CVE-2025-61884.

Key Findings

The flaw is easily exploitable and allows an unauthenticated attacker with network access to compromise Oracle Configurator, which can grant access to sensitive resources and configuration data. The affected versions include 12.2.3 through 12.2.14.

Impact

Successful exploitation of CVE-2025-61884 may result in unauthorized access to critical business data or full exposure of information accessible through Oracle Configurator. Administrators are strongly advised to apply vendor's patches and recommended mitigations to reduce this exposure.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	Oracle E-Business Suite - SSRF - CVE:CVE-2025-61884	N/A	Block	This is a New Detection

WAF - WAF Release - 2025-10-24 - Emergency

Fri, 24 Oct 2025 00:00:00 GMT

This week’s release introduces a new detection signature that enhances coverage for a critical vulnerability in Windows Server Update Services (WSUS), tracked as CVE-2025-59287.

Key Findings

The vulnerability allows unauthenticated attackers to potentially achieve remote code execution. The updated detection logic strengthens defenses by improving resilience against exploitation attempts targeting this flaw.

Impact

Successful exploitation of CVE-2025-59287 could enable attackers to hijack sessions, execute arbitrary commands, exfiltrate sensitive data, and disrupt storefront operations. These actions pose significant confidentiality and integrity risks to affected environments. Administrators should apply vendor patches immediately to mitigate exposure.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	Windows Server - Deserialization - CVE:CVE-2025-59287	N/A	Block	This is a New Detection

WAF - WAF Release - 2025-10-23 - Emergency

Thu, 23 Oct 2025 00:00:00 GMT

This week highlights enhancements to detection signatures improving coverage for vulnerabilities in Adobe Commerce and Magento Open Source, linked to CVE-2025-54236.

Key Findings

This vulnerability allows unauthenticated attackers to take over customer accounts through the Commerce REST API and, in certain configurations, may lead to remote code execution. The latest update enhances detection logic to provide more resilient protection against exploitation attempts.

Impact

Adobe Commerce (CVE-2025-54236): Exploitation may allow attackers to hijack sessions, execute arbitrary commands, steal data, and disrupt storefronts, resulting in confidentiality and integrity risks for merchants. Administrators are strongly encouraged to apply vendor patches without delay.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		N/A	Adobe Commerce - Remote Code Execution - CVE:CVE-2025-54236	N/A	Block	This is a New Detection

WAF - WAF Release - 2025-10-20

Mon, 20 Oct 2025 00:00:00 GMT

This week’s update introduces an enhanced rule that expands detection coverage for a critical vulnerability in Oracle E-Business Suite. It also improves an existing rule to provide more reliable coverage in request processing.

Key Findings

New WAF rule deployed for Oracle E-Business Suite (CVE-2025-61882) to block unauthenticated attacker's network access via HTTP to compromise Oracle Concurrent Processing. If successfully exploited, this vulnerability may result in remote code execution.

Impact

Successful exploitation of CVE-2025-61882 allows unauthenticated attackers to execute arbitrary code remotely by chaining multiple weaknesses, enabling lateral movement into internal services, data exfiltration, and large-scale extortionware deployment within Oracle E-Business Suite environments.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100598A	Remote Code Execution - Common Bash Bypass - Beta	Log	Block	This rule is merged into the original rule "Remote Code Execution - Common Bash Bypass" (ID: )
Cloudflare Managed Ruleset	100916A	Oracle E-Business Suite - Remote Code Execution - CVE:CVE-2025-61882 - 2	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	N/A	HTTP Truncated	N/A	Disabled	This is a New Detection

WAF - New detections released for WAF managed rulesets

Fri, 17 Oct 2025 00:00:00 GMT

This week we introduced several new detections across Cloudflare Managed Rulesets, expanding coverage for high-impact vulnerability classes such as SSRF, SQLi, SSTI, Reverse Shell attempts, and Prototype Pollution. These rules aim to improve protection against attacker-controlled payloads that exploit misconfigurations or unvalidated input in web applications.

Key Findings

New detections added for multiple exploit categories:

SSRF (Server-Side Request Forgery) — new rules targeting both local and cloud metadata abuse patterns (Beta).

SQL Injection (SQLi) — rules for common patterns, sleep/time-based injections, and string/wait function exploitation across headers and URIs.

SSTI (Server-Side Template Injection) — arithmetic-based probe detections introduced across URI, header, and body fields.

Reverse Shell and XXE payloads — enhanced heuristics for command execution and XML external entity misuse.

Prototype Pollution — new Beta rule identifying common JSON payload structures used in object prototype poisoning.

PHP Wrapper Injection and HTTP Parameter Pollution detections — to catch path traversal and multi-parameter manipulation attempts.

Anomaly Header Checks — detecting CRLF injection attempts in header names.

Impact

These updates help detect multi-vector payloads that blend SSRF + RCE or SQLi + SSTI attacks, especially in cloud-hosted applications with exposed metadata endpoints or unsafe template rendering.

Prototype Pollution and HTTP parameter pollution rules address emerging JavaScript supply-chain exploitation patterns increasingly seen in real-world incidents.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	N/A	Anomaly:Header - name - CR, LF	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	N/A	Generic Rules - Reverse Shell - Body	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	N/A	Generic Rules - Reverse Shell - Header	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	N/A	Generic Rules - Reverse Shell - URI	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	N/A	Generic Rules - XXE - Body	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	N/A	Generic Rules - SQLi - Common Patterns - Header URI	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	N/A	Generic Rules - SQLi - Sleep Function - Header URI	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	N/A	Generic Rules - SQLi - String Function - Header URI	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	N/A	Generic Rules - SQLi - WaitFor Function - Header URI	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	N/A	SSRF - Local - Beta	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	N/A	SSRF - Local - 2 - Beta	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	N/A	SSRF - Cloud - Beta	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	N/A	SSRF - Cloud - 2 - Beta	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	N/A	SSTI - Arithmetic Probe - URI	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	N/A	SSTI - Arithmetic Probe - Header	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	N/A	SSTI - Arithmetic Probe - Body	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	N/A	PHP Wrapper Injection	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	N/A	PHP Wrapper Injection	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	N/A	HTTP parameter pollution	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	N/A	Prototype Pollution - Common Payloads - Beta	N/A	Disabled	This is a New Detection

WAF - WAF Release - 2025-10-13

Mon, 13 Oct 2025 00:00:00 GMT

This week’s highlights include a new JinJava rule targeting a sandbox-bypass flaw that could allow malicious template input to escape execution controls. The rule improves detection for unsafe template rendering paths.

Key Findings

New WAF rule deployed for JinJava (CVE-2025-59340) to block a sandbox bypass in the template engine that permits attacker-controlled type construction and arbitrary class instantiation; in vulnerable environments this can escalate to remote code execution and full server compromise.

Impact

CVE-2025-59340 — Exploitation enables attacker-supplied type descriptors / Jackson ObjectMapper abuse, allowing arbitrary class loading, file/URL access (LFI/SSRF primitives) and, with suitable gadget chains, potential remote code execution and system compromise.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		100892	JinJava - SSTI - CVE:CVE-2025-59340	Log	Block	This is a New Detection

WAF - WAF Release - 2025-10-07 - Emergency

Tue, 07 Oct 2025 00:00:00 GMT

This week highlights multiple critical Cisco vulnerabilities (CVE-2025-20363, CVE-2025-20333, CVE-2025-20362). This flaw stems from improper input validation in HTTP(S) requests. An authenticated VPN user could send crafted requests to execute code as root, potentially compromising the device. The initial two rules were made available on September 28, with a third rule added today, October 7, for more robust protection.

Cisco (CVE-2025-20333, CVE-2025-20362, CVE-2025-20363): Multiple vulnerabilities that could allow attackers to exploit unsafe deserialization and input validation flaws. Successful exploitation may result in arbitrary code execution, privilege escalation, or command injection on affected systems.

Impact

Cisco (CVE-2025-20333, CVE-2025-20362, CVE-2025-20363): Exploitation enables attackers to escalate privileges or achieve remote code execution via command injection. Administrators are strongly advised to apply vendor updates immediately.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		100788B	Cisco Secure Firewall Adaptive Security Appliance - Remote Code Execution - CVE:CVE-2025-20333, CVE:CVE-2025-20362, CVE:CVE-2025-20363	N/A	Block	This is a New Detection

WAF - WAF Release - 2025-10-06

Mon, 06 Oct 2025 00:00:00 GMT

This week’s highlights prioritise an emergency Oracle E-Business Suite RCE rule deployed to block active, high-impact exploitation. Also addressed are high-severity Chaos Mesh controller command-injection flaws that enable unauthenticated in-cluster RCE and potential cluster compromise, plus a form-data multipart boundary issue that permits HTTP Parameter Pollution (HPP). Two new generic SQLi detections were added to catch inline-comment obfuscation and information disclosure techniques.

Key Findings

New emergency rule released for Oracle E-Business Suite (CVE-2025-61882) addressing an actively exploited remote code execution vulnerability in core business application modules. Immediate mitigation deployed to protect enterprise workloads.
Chaos Mesh (CVE-2025-59358,CVE-2025-59359,CVE-2025-59360,CVE-2025-59361): A GraphQL debug endpoint on the Chaos Controller Manager is exposed without authentication; several controller mutations (cleanTcs, killProcesses, cleanIptables) are vulnerable to OS command injection.
Form-Data (CVE-2025-7783): Attackers who can observe Math.random() outputs and control request fields in form-data may exploit this flaw to perform HTTP parameter pollution, leading to request tampering or data manipulation.
Two new generic SQLi detections added to enhance baseline coverage against inline-comment obfuscation and information disclosure attempts.

Impact

CVE-2025-61882 — Oracle E-Business Suite remote code execution (emergency detection): attacker-controlled input can yield full system compromise, data exfiltration, and operational outage; immediate blocking enforced.
CVE-2025-59358 / CVE-2025-59359 / CVE-2025-59360 / CVE-2025-59361 — Unauthenticated command-injection in Chaos Mesh controllers allowing remote code execution, cluster compromise, and service disruption (high availability risk).
CVE-2025-7783 — Predictable multipart boundaries in form-data enabling HTTP Parameter Pollution; results include request tampering, parameter overwrite, and downstream data integrity loss.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100882	Chaos Mesh - Missing Authentication - CVE:CVE-2025-59358	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100883	Chaos Mesh - Command Injection - CVE:CVE-2025-59359	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100884	Chaos Mesh - Command Injection - CVE:CVE-2025-59361	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100886	Form-Data - Parameter Pollution - CVE:CVE-2025-7783	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100888	Chaos Mesh - Command Injection - CVE:CVE-2025-59360	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100916	Oracle E-Business Suite - Remote Code Execution - CVE:CVE-2025-61882	N/A	Block	This is a New Detection
Cloudflare Managed Ruleset	100917	Generic Rules - SQLi - Inline Comment Injection	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100918	Generic Rules - SQLi - Information Disclosure	N/A	Disabled	This is a New Detection

WAF - WAF Release - 2025-10-03

Fri, 03 Oct 2025 00:00:00 GMT

Managed Ruleset Updated

This update introduces 21 new detections in the Cloudflare Managed Ruleset (all currently set to Disabled mode to preserve remediation logic and allow quick activation if needed). The rules cover a broad spectrum of threats - SQL injection techniques, command and code injection, information disclosure of common files, URL anomalies, and cross-site scripting.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100902	Generic Rules - Command Execution - 2	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100908	Generic Rules - Command Execution - 3	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100910	Generic Rules - Command Execution - 4	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100915	Generic Rules - Command Execution - 5	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100899	Generic Rules - Content-Type Abuse	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100914	Generic Rules - Content-Type Injection	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100911	Generic Rules - Cookie Header Injection	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100905	Generic Rules - NoSQL Injection	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100913	Generic Rules - NoSQL Injection - 2	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100907	Generic Rules - Parameter Pollution	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100906	Generic Rules - PHP Object Injection	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100904	Generic Rules - Prototype Pollution	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100897	Generic Rules - Prototype Pollution 2	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100903	Generic Rules - Reverse Shell	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100909	Generic Rules - Reverse Shell - 2	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100898	Generic Rules - SSJI NoSQL	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100896	Generic Rules - SSRF	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100895	Generic Rules - Template Injection	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100895A	Generic Rules - Template Injection - 2	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100912	Generic Rules - XXE	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100900	Relative Paths - Anomaly Headers	N/A	Disabled	This is a New Detection

WAF - WAF Release - 2025-09-29

Mon, 29 Sep 2025 00:00:00 GMT

This week highlights four important vendor- and component-specific issues: an authentication bypass in SimpleHelp (CVE-2024-57727), an information-disclosure flaw in Flowise Cloud (CVE-2025-58434), an SSRF in the WordPress plugin Ditty (CVE-2025-8085), and a directory-traversal bug in Vite (CVE-2025-30208). These are paired with improvements to our generic detection coverage (SQLi, SSRF) to raise the baseline and reduce noisy gaps.

Key Findings

SimpleHelp (CVE-2024-57727): Authentication bypass in SimpleHelp that can allow unauthorized access to management interfaces or sessions.
Flowise Cloud (CVE-2025-58434): Information-disclosure vulnerability in Flowise Cloud that may expose sensitive configuration or user data to unauthenticated or low-privileged actors.
WordPress:Plugin: Ditty (CVE-2025-8085): SSRF in the Ditty WordPress plugin enabling server-side requests that could reach internal services or cloud metadata endpoints.
Vite (CVE-2025-30208): Directory-traversal vulnerability in Vite allowing access to filesystem paths outside the intended web root.

Impact

These vulnerabilities allow attackers to gain access, escalate privileges, or execute actions that were previously unavailable:

SimpleHelp (CVE-2024-57727): An authentication bypass that can let unauthenticated attackers access management interfaces or hijack sessions — enabling lateral movement, credential theft, or privilege escalation within affected environments.
Flowise Cloud (CVE-2025-58434): Information-disclosure flaw that can expose sensitive configuration, tokens, or user data; leaked secrets may be chained into account takeover or privileged access to backend services.
WordPress:Plugin: Ditty (CVE-2025-8085): SSRF that enables server-side requests to internal services or cloud metadata endpoints, potentially allowing attackers to retrieve credentials or reach otherwise inaccessible infrastructure, leading to privilege escalation or cloud resource compromise.
Vite (CVE-2025-30208): Directory-traversal vulnerability that can expose filesystem contents outside the web root (configuration files, keys, source code), which attackers can use to escalate privileges or further compromise systems.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100717	SimpleHelp - Auth Bypass - CVE:CVE-2024-57727	Log	Block	This rule is merged to 100717 in legacy WAF and in new WAF
Cloudflare Managed Ruleset	100775	Flowise Cloud - Information Disclosure - CVE:CVE-2025-58434	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100881	WordPress:Plugin:Ditty - SSRF - CVE:CVE-2025-8085	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100887	Vite - Directory Traversal - CVE:CVE-2025-30208	Log	Block	This is a New Detection

WAF - WAF Release - 2025-09-28 - Emergency

Sun, 28 Sep 2025 00:00:00 GMT

Key Findings

Cisco (CVE-2025-20333, CVE-2025-20362, CVE-2025-20363): Multiple vulnerabilities that could allow attackers to exploit unsafe deserialization and input validation flaws. Successful exploitation may result in arbitrary code execution, privilege escalation, or command injection on affected systems.

Impact

Cisco (CVE-2025-20333, CVE-2025-20362, CVE-2025-20363): Exploitation enables attackers to escalate privileges or achieve remote code execution via command injection.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		100788	Cisco Secure Firewall Adaptive Security Appliance - Remote Code Execution - CVE:CVE-2025-20333, CVE:CVE-2025-20362, CVE:CVE-2025-20363	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset		100788A	Cisco Secure Firewall Adaptive Security Appliance - Remote Code Execution - CVE:CVE-2025-20333, CVE:CVE-2025-20362, CVE:CVE-2025-20363	N/A	Disabled	This is a New Detection

WAF - WAF Release - 2025-09-26

Fri, 26 Sep 2025 00:00:00 GMT

Managed Ruleset Updated

This update introduces 11 new detections in the Cloudflare Managed Ruleset (all currently set to Disabled mode to preserve remediation logic and allow quick activation if needed). The rules cover a broad spectrum of threats - SQL injection techniques, command and code injection, information disclosure of common files, URL anomalies, and cross-site scripting.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100859A	SQLi - UNION - 3	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100889	Command Injection - Generic 9	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100890	Information Disclosure - Common Files - 2	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100891	Anomaly:URL - Relative Paths	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100894	XSS - Inline Function	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100895	XSS - DOM	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100896	SQLi - MSSQL Length Enumeration	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100897	Generic Rules - Code Injection - 3	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100898	SQLi - Evasion	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100899	SQLi - Probing 2	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100900	SQLi - Probing	N/A	Disabled	This is a New Detection

WAF - WAF Release - 2025-09-24 - Emergency

Wed, 24 Sep 2025 00:00:00 GMT

This week highlights a critical vendor-specific vulnerability: a deserialization flaw in the License Servlet of Fortra’s GoAnywhere MFT. By forging a license response signature, an attacker can trigger deserialization of arbitrary objects, potentially leading to command injection.

Key Findings

GoAnywhere MFT (CVE-2025-10035): Deserialization vulnerability in the License Servlet that allows attackers with a forged license response signature to deserialize arbitrary objects, potentially resulting in command injection.

Impact

GoAnywhere MFT (CVE-2025-10035): Exploitation enables attackers to escalate privileges or achieve remote code execution via command injection.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		100787	Fortra GoAnywhere - Auth Bypass - CVE:CVE-2025-10035	N/A	Block	This is a New Detection

WAF - WAF Release - 2025-09-22

Mon, 22 Sep 2025 00:00:00 GMT

This week emphasizes two critical vendor-specific vulnerabilities: a full elevation-of-privilege in Microsoft Azure Networking (CVE-2025-54914) and a server-side template injection (SSTI) leading to remote code execution (RCE) in Skyvern (CVE-2025-49619). These are complemented by enhancements in generic detections (SQLi, SSRF) to improve baseline coverage.

Key Findings

Azure (CVE-2025-54914): Vulnerability in Azure Networking allowing elevation of privileges.
Skyvern (CVE-2025-49619): Skyvern ≤ 0.1.85 has a server-side template injection (SSTI) vulnerability in its Prompt field (workflow blocks) via Jinja2. Authenticated users with low privileges can get remote code execution (blind).
Generic SQLi / SSRF improvements: Expanded rule coverage to detect obfuscated SQL injection patterns and SSRF across host, local, and cloud contexts.

Impact

These vulnerabilities allow attackers to escalate privileges or execute code under conditions where previously they could not:

Azure CVE-2025-54914 enables an attacker from the network with no credentials to gain high-level access within Azure Networking; could lead to full compromise of networking components.
Skyvern CVE-2025-49619 allows authenticated users with minimal privilege to exploit SSTI for remote code execution, undermining isolation of workflow components.
The improvements for SQLi and SSRF reduce risk from common injection and request-based attacks.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100146	SSRF - Host - 2	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100146B	SSRF - Local - 2	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100146C	SSRF - Cloud - 2	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100714	Azure - Auth Bypass - CVE:CVE-2025-54914	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100758	Skyvern - Remote Code Execution - CVE:CVE-2025-49619	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100773	Next.js - SSRF	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100774	Adobe Commerce - Remote Code Execution - CVE:CVE-2025-54236	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100800_BETA	SQLi - Obfuscated Boolean - Beta	Log	Block	This rule has been merged into the original rule (ID: )

WAF - WAF Release - 2025-09-15

Mon, 15 Sep 2025 00:00:00 GMT

This week's update

This week's focus highlights newly disclosed vulnerabilities in DevOps tooling, data visualization platforms, and enterprise CMS solutions. These issues include sensitive information disclosure and remote code execution, putting organizations at risk of credential leakage, unauthorized access, and full system compromise.

Key Findings

Argo CD (CVE-2025-55190): Exposure of sensitive information could allow attackers to access credential data stored in configurations, potentially leading to compromise of Kubernetes workloads and secrets.
DataEase (CVE-2025-57773): Insufficient input validation enables JNDI injection and insecure deserialization, resulting in remote code execution (RCE). Successful exploitation grants attackers control over the application server.
Sitecore (CVE-2025-53694): A sensitive information disclosure flaw allows unauthorized access to confidential information stored in Sitecore deployments, raising the risk of data breaches and privilege escalation.

Impact

These vulnerabilities expose organizations to serious risks, including credential theft, unauthorized access, and full system compromise. Argo CD's flaw may expose Kubernetes secrets, DataEase exploitation could give attackers remote execution capabilities, and Sitecore's disclosure issue increases the likelihood of sensitive data leakage and business impact.

Administrators are strongly advised to apply vendor patches immediately, rotate exposed credentials, and review access controls to mitigate these risks.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100646	Argo CD - Information Disclosure - CVE:CVE-2025-55190s	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100874	DataEase - JNDI injection - CVE:CVE-2025-57773	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100880	Sitecore - Information Disclosure - CVE:CVE-2025-53694	Log	Block	This is a New Detection

WAF - WAF Release - 2025-09-08

Mon, 08 Sep 2025 00:00:00 GMT

This week's update

This week’s focus highlights newly disclosed vulnerabilities in web frameworks, enterprise applications, and widely deployed CMS plugins. The vulnerabilities include SSRF, authentication bypass, arbitrary file upload, and remote code execution (RCE), exposing organizations to high-impact risks such as unauthorized access, system compromise, and potential data exposure. In addition, security rule enhancements have been deployed to cover general command injection and server-side injection attacks, further strengthening protections.

Key Findings

Next.js (CVE-2025-57822): Improper handling of redirects in custom middleware can lead to server-side request forgery (SSRF) when user-supplied headers are forwarded. Attackers could exploit this to access internal services or cloud metadata endpoints. The issue has been resolved in versions 14.2.32 and 15.4.7. Developers using custom middleware should upgrade and verify proper redirect handling in next() calls.
ScriptCase (CVE-2025-47227, CVE-2025-47228): In the Production Environment extension in Netmake ScriptCase through 9.12.006 (23), two vulnerabilities allow attackers to reset admin accounts and execute system commands, potentially leading to full compromise of affected deployments.
Sar2HTML (CVE-2025-34030): In Sar2HTML version 3.2.2 and earlier, insufficient input sanitization of the plot parameter allows remote, unauthenticated attackers to execute arbitrary system commands. Exploitation could compromise the underlying server and its data.
Zhiyuan OA (CVE-2025-34040): An arbitrary file upload vulnerability exists in the Zhiyuan OA platform. Improper validation in the wpsAssistServlet interface allows unauthenticated attackers to upload crafted files via path traversal, which can be executed on the web server, leading to remote code execution.
WordPress:Plugin:InfiniteWP Client (CVE-2020-8772): A vulnerability in the InfiniteWP Client plugin allows attackers to perform restricted actions and gain administrative control of connected WordPress sites.

Impact

These vulnerabilities could allow attackers to gain unauthorized access, execute malicious code, or take full control of affected systems. The Next.js SSRF flaw may expose internal services or cloud metadata endpoints to attackers. Exploitations of ScriptCase and Sar2HTML could result in remote code execution, administrative takeover, and full server compromise. In Zhiyuan OA, the arbitrary file upload vulnerability allows attackers to execute malicious code on the web server, potentially exposing sensitive data and applications. The authentication bypass in WordPress InfiniteWP Client enables attackers to gain administrative access, risking data exposure and unauthorized control of connected sites.

Administrators are strongly advised to apply vendor patches immediately, remove unsupported software, and review authentication and access controls to mitigate these risks.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100007D	Command Injection - Common Attack Commands Args	Log	Block	This rule has been merged into the original rule "Command Injection - Common Attack Commands" (ID: ) for New WAF customers only.
Cloudflare Managed Ruleset	100617	Next.js - SSRF - CVE:CVE-2025-57822	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100659_BETA	Common Payloads for Server-Side Template Injection - Beta	Log	Block	This rule is merged into the original rule "Common Payloads for Server-Side Template Injection" (ID: )
Cloudflare Managed Ruleset	100824B	CrushFTP - Remote Code Execution - CVE:CVE-2025-54309 - 3	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100848	ScriptCase - Auth Bypass - CVE:CVE-2025-47227	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100849	ScriptCase - Command Injection - CVE:CVE-2025-47228	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100872	WordPress:Plugin:InfiniteWP Client - Missing Authorization - CVE:CVE-2020-8772	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100873	Sar2HTML - Command Injection - CVE:CVE-2025-34030	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100875	Zhiyuan OA - Remote Code Execution - CVE:CVE-2025-34040	Log	Block	This is a New Detection

WAF - WAF Release - 2025-09-04 - Emergency

Thu, 04 Sep 2025 00:00:00 GMT

This week's update

This week, new critical vulnerabilities were disclosed in Sitecore’s Sitecore Experience Manager (XM), Sitecore Experience Platform (XP), specifically versions 9.0 through 9.3, and 10.0 through 10.4. These flaws are caused by unsafe data deserialization and code reflection, leaving affected systems at high risk of exploitation.

Key Findings

CVE-2025-53690: Remote Code Execution through Insecure Deserialization
CVE-2025-53691: Remote Code Execution through Insecure Deserialization
CVE-2025-53693: HTML Cache Poisoning through Unsafe Reflections

Impact

Exploitation could allow attackers to execute arbitrary code remotely on the affected system and conduct cache poisoning attacks, potentially leading to further compromise. Applying the latest vendor-released solution without delay is strongly recommended.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100878	Sitecore - Remote Code Execution - CVE:CVE-2025-53691	N/A	Block	This is a new detection
Cloudflare Managed Ruleset	100631	Sitecore - Cache Poisoning - CVE:CVE-2025-53693	N/A	Block	This is a new detection
Cloudflare Managed Ruleset	100879	Sitecore - Remote Code Execution - CVE:CVE-2025-53690	N/A	Block	This is a new detection

WAF - WAF Release - 2025-09-01

Mon, 01 Sep 2025 00:00:00 GMT

This week's update

This week, a critical vulnerability was disclosed in Fortinet FortiWeb (versions 7.6.3 and below, versions 7.4.7 and below, versions 7.2.10 and below, and versions 7.0.10 and below), linked to improper parameter handling that could allow unauthorized access.

Key Findings

Fortinet FortiWeb (CVE-2025-52970): A vulnerability may allow an unauthenticated remote attacker with access to non-public information to log in as any existing user on the device via a specially crafted request.

Impact

Exploitation could allow an unauthenticated attacker to impersonate any existing user on the device, potentially enabling them to modify system settings or exfiltrate sensitive information, posing a serious security risk. Upgrading to the latest vendor-released version is strongly recommended.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		100586	Fortinet FortiWeb - Auth Bypass - CVE:CVE-2025-52970	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset		100136C	XSS - JavaScript - Headers and Body	N/A	N/A	Rule metadata description refined. Detection unchanged.

WAF - WAF Release - 2025-08-29 - Emergency

Fri, 29 Aug 2025 00:00:00 GMT

This week's update

This week, new critical vulnerabilities were disclosed in Next.js’s image optimization functionality, exposing a broad range of production environments to risks of data exposure and cache manipulation.

Key Findings

CVE-2025-55173: Arbitrary file download from the server via image optimization.
CVE-2025-57752: Cache poisoning leading to unauthorized data disclosure.

Impact

Exploitation could expose sensitive files, leak user or backend data, and undermine application trust. Given Next.js’s wide use, immediate patching and cache hardening are strongly advised.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		100613	Next.js - Dangerous File Download - CVE:CVE-2025-55173	N/A	Block	This is a new detection
Cloudflare Managed Ruleset		100616	Next.js - Information Disclosure - CVE:CVE-2025-57752	N/A	Block	This is a new detection

WAF - WAF Release - 2025-08-25

Mon, 25 Aug 2025 00:00:00 GMT

This week's update

This week, critical vulnerabilities were disclosed that impact widely used open-source infrastructure, creating high-risk scenarios for code execution and operational disruption.

Key Findings

Apache HTTP Server – Code Execution (CVE-2024-38474): A flaw in Apache HTTP Server allows attackers to achieve remote code execution, enabling full compromise of affected servers. This vulnerability threatens the confidentiality, integrity, and availability of critical web services.
Laravel (CVE-2024-55661): A security flaw in Laravel introduces the potential for remote code execution under specific conditions. Exploitation could provide attackers with unauthorized access to application logic and sensitive backend data.

Impact

These vulnerabilities pose severe risks to enterprise environments and open-source ecosystems. Remote code execution enables attackers to gain deep system access, steal data, disrupt services, and establish persistent footholds for broader intrusions. Given the widespread deployment of Apache HTTP Server and Laravel in production systems, timely patching and mitigation are critical.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100822_BETA	WordPress:Plugin:WPBookit - Remote Code Execution - CVE:CVE-2025-6058	N/A	Disabled	This was merged in to the original rule "WordPress:Plugin:WPBookit - Remote Code Execution - CVE:CVE-2025-6058" (ID: )
Cloudflare Managed Ruleset	100831	Apache HTTP Server - Code Execution - CVE:CVE-2024-38474	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100846	Laravel - Remote Code Execution - CVE:CVE-2024-55661	Log	Disabled	This is a New Detection

WAF - WAF Release - 2025-08-22

Fri, 22 Aug 2025 00:00:00 GMT

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100850	Command Injection - Generic 2	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100851	Remote Code Execution - Java Deserialization	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100852	Command Injection - Generic 3	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100853	Remote Code Execution - Common Bash Bypass Beta	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100854	XSS - Generic JavaScript	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100855	Command Injection - Generic 4	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100856	PHP Object Injection	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100857	Generic - Parameter Fuzzing	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100858	Code Injection - Generic 4	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100859	SQLi - UNION - 2	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100860	Command Injection - Generic 5	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100861	Command Execution - Generic	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100862	GraphQL Injection - 2	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100863	Command Injection - Generic 6	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100864	Code Injection - Generic 2	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100865	PHP Object Injection - 2	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100866	SQLi - LIKE 2	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100867	SQLi - DROP - 2	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100868	Code Injection - Generic 3	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100869	Command Injection - Generic 7	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100870	Command Injection - Generic 8	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100871	SQLi - LIKE 3	N/A	Disabled	This is a New Detection

WAF - WAF Release - 2025-08-18

Mon, 18 Aug 2025 00:00:00 GMT

This week's update

This week, a series of critical vulnerabilities were discovered impacting core enterprise and open-source infrastructure. These flaws present a range of risks, providing attackers with distinct pathways for remote code execution, methods to breach internal network boundaries, and opportunities for critical data exposure and operational disruption.

Key Findings

SonicWall SMA (CVE-2025-32819, CVE-2025-32820, CVE-2025-32821): A remote authenticated attacker with SSLVPN user privileges can bypass path traversal protections. These vulnerabilities enable a attacker to bypass security checks to read, modify, or delete arbitrary files. An attacker with administrative privileges can escalate this further, using a command injection flaw to upload malicious files, which could ultimately force the appliance to reboot to its factory default settings.
Ms-Swift Project (CVE-2025-50460): An unsafe deserialization vulnerability exists in the Ms-Swift project's handling of YAML configuration files. If an attacker can control the content of a configuration file passed to the application, they can embed a malicious payload that will execute arbitrary code and it can be executed during deserialization.
Apache Druid (CVE-2023-25194): This vulnerability in Apache Druid allows an attacker to cause the server to connect to a malicious LDAP server. By sending a specially crafted LDAP response, the attacker can trigger an unrestricted deserialization of untrusted data. If specific "gadgets" (classes that can be abused) are present in the server's classpath, this can be escalated to achieve Remote Code Execution (RCE).
Tenda AC8v4 (CVE-2025-51087, CVE-2025-51088): Vulnerabilities allow an authenticated attacker to trigger a stack-based buffer overflow. By sending malformed arguments in a request to specific endpoints, an attacker can crash the device or potentially achieve arbitrary code execution.
Open WebUI (CVE-2024-7959): This vulnerability allows a user to change the OpenAI URL endpoint to an arbitrary internal network address without proper validation. This flaw can be exploited to access internal services or cloud metadata endpoints, potentially leading to remote command execution if the attacker can retrieve instance secrets or access sensitive internal APIs.
BentoML (CVE-2025-54381): The vulnerability exists in the serialization/deserialization handlers for multipart form data and JSON requests, which automatically download files from user-provided URLs without proper validation of internal network addresses. This allows attackers to fetch from unintended internal services, including cloud metadata and localhost.
Adobe Experience Manager Forms (CVE-2025-54254): An Improper Restriction of XML External Entity Reference ('XXE') vulnerability that could lead to arbitrary file system read in Adobe AEM (≤6.5.23).

Impact

These vulnerabilities affect core infrastructure, from network security appliances like SonicWall to data platforms such as Apache Druid and ML frameworks like BentoML. The code execution and deserialization flaws are particularly severe, offering deep system access that allows attackers to steal data, disrupt services, and establish a foothold for broader intrusions. Simultaneously, SSRF and XXE vulnerabilities undermine network boundaries, exposing sensitive internal data and creating pathways for lateral movement. Beyond data-centric threats, flaws in edge devices like the Tenda router introduce the tangible risk of operational disruption, highlighting a multi-faceted threat to the security and stability of key enterprise systems.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100574	SonicWall SMA - Remote Code Execution - CVE:CVE-2025-32819, CVE:CVE-2025-32820, CVE:CVE-2025-32821	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100576	Ms-Swift Project - Remote Code Execution - CVE:CVE-2025-50460	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100585	Apache Druid - Remote Code Execution - CVE:CVE-2023-25194	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100834	Tenda AC8v4 - Auth Bypass - CVE:CVE-2025-51087, CVE:CVE-2025-51088	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100835	Open WebUI - SSRF - CVE:CVE-2024-7959	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100837	SQLi - OOB	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100841	BentoML - SSRF - CVE:CVE-2025-54381	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100841A	BentoML - SSRF - CVE:CVE-2025-54381 - 2	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100841B	BentoML - SSRF - CVE:CVE-2025-54381 - 3	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100845	Adobe Experience Manager Forms - XSS - CVE:CVE-2025-54254	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100845A	Adobe Experience Manager Forms - XSS - CVE:CVE-2025-54254 - 2	Log	Block	This is a New Detection

WAF - WAF Release - 2025-08-11

Mon, 11 Aug 2025 00:00:00 GMT

This week's update focuses on a wide range of enterprise software, from network infrastructure and security platforms to content management systems and development frameworks. Flaws include unsafe deserialization, OS command injection, SSRF, authentication bypass, and arbitrary file upload — many of which allow unauthenticated remote code execution. Notable risks include Cisco Identity Services Engine and Ivanti EPMM, where successful exploitation could grant attackers full administrative control of core network infrastructure and popular web services such as WordPress, SharePoint, and Ingress-Nginx, where security bypasses and arbitrary file uploads could lead to complete site or server compromise.

Key Findings

Cisco Identity Services Engine (CVE-2025-20281): Insufficient input validation in a specific API of Cisco Identity Services Engine (ISE) and ISE-PIC allows an unauthenticated, remote attacker to execute arbitrary code with root privileges on an affected device.
Wazuh Server (CVE-2025-24016): An unsafe deserialization vulnerability in Wazuh Server (versions 4.4.0 to 4.9.0) allows for remote code execution and privilege escalation. By injecting unsanitized data, an attacker can trigger an exception to execute arbitrary code on the server.
CrushFTP (CVE-2025-54309): A flaw in AS2 validation within CrushFTP allows remote attackers to gain administrative access via HTTPS on systems not using the DMZ proxy feature. This flaw can lead to unauthorized file access and potential system compromise.
Kentico Xperience CMS (CVE-2025-2747, CVE-2025-2748): Vulnerabilities in Kentico Xperience CMS could enable cross-site scripting (XSS), allowing attackers to inject malicious scripts into web pages. Additionally, a flaw could allow unauthenticated attackers to bypass the Staging Sync Server's authentication, potentially leading to administrative control over the CMS.
Node.js (CVE-2025-27210): An incomplete fix for a previous vulnerability (CVE-2025-23084) in Node.js affects the path.join() API method on Windows systems. The vulnerability can be triggered using reserved Windows device names such as CON, PRN, or AUX.
WordPress:Plugin:Simple File List (CVE-2025-34085, CVE-2020-36847): This vulnerability in the Simple File List plugin for WordPress allows an unauthenticated remote attacker to upload arbitrary files to a vulnerable site. This can be exploited to achieve remote code execution on the server.
(Note: CVE-2025-34085 has been rejected as a duplicate.)
GeoServer (CVE-2024-29198): A Server-Side Request Forgery (SSRF) vulnerability exists in GeoServer's Demo request endpoint, which can be exploited where the Proxy Base URL has not been configured.
Ivanti EPMM (CVE-2025-6771): An OS command injection vulnerability in Ivanti Endpoint Manager Mobile (EPMM) before versions 12.5.0.2, 12.4.0.3, and 12.3.0.3 allows a remote, authenticated attacker with high privileges to execute arbitrary code.
Microsoft SharePoint (CVE-2024-38018): This is a remote code execution vulnerability affecting Microsoft SharePoint Server.
Manager-IO (CVE-2025-54122): A critical unauthenticated full read Server-Side Request Forgery (SSRF) vulnerability is present in the proxy handler of both Manager Desktop and Server editions up to version 25.7.18.2519. This allows an unauthenticated attacker to bypass network isolation and access internal services.
Ingress-Nginx (CVE-2025-1974): A vulnerability in the Ingress-Nginx controller for Kubernetes allows an attacker to bypass access control rules. An unauthenticated attacker with access to the pod network can achieve arbitrary code execution in the context of the ingress-nginx controller.
PaperCut NG/MF (CVE-2023-2533): A Cross-Site Request Forgery (CSRF) vulnerability has been identified in PaperCut NG/MF. Under specific conditions, an attacker could exploit this to alter security settings or execute arbitrary code if they can deceive an administrator with an active login session into clicking a malicious link.
SonicWall SMA (CVE-2025-40598): This vulnerability could allow an unauthenticated attacker to bypass security controls. This allows a remote, unauthenticated attacker to potentially execute arbitrary JavaScript code.
WordPress (CVE-2025-5394): The "Alone – Charity Multipurpose Non-profit WordPress Theme" for WordPress is vulnerable to arbitrary file uploads. A missing capability check allows unauthenticated attackers to upload ZIP files containing webshells disguised as plugins, leading to remote code execution.

Impact

These vulnerabilities span a broad range of enterprise technologies, including network access control systems, monitoring platforms, web servers, CMS platforms, cloud services, and collaboration tools. Exploitation techniques range from remote code execution and command injection to authentication bypass, SQL injection, path traversal, and configuration weaknesses.

A critical flaw in perimeter devices like Ivanti EPMM or SonicWall SMA could allow an unauthenticated attacker to gain remote code execution, completely breaching the primary network defense. A separate vulnerability within Cisco's Identity Services Engine could then be exploited to bypass network segmentation, granting an attacker widespread internal access. Insecure deserialization issues in platforms like Wazuh Server and CrushFTP could then be used to run malicious payloads or steal sensitive files from administrative consoles. Weaknesses in web delivery controllers like Ingress-Nginx or popular content management systems such as WordPress, SharePoint, and Kentico Xperience create vectors to bypass security controls, exfiltrate confidential data, or fully compromise servers.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100538	GeoServer - SSRF - CVE:CVE-2024-29198	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100548	Ivanti EPMM - Remote Code Execution - CVE:CVE-2025-6771	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100550	Microsoft SharePoint - Remote Code Execution - CVE:CVE-2024-38018	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100562	Manager-IO - SSRF - CVE:CVE-2025-54122	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100565	Cisco Identity Services Engine - Remote Code Execution - CVE:CVE-2025-20281	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100567	Ingress-Nginx - Remote Code Execution - CVE:CVE-2025-1974	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100569	PaperCut NG/MF - Remote Code Execution - CVE:CVE-2023-2533	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100571	SonicWall SMA - XSS - CVE:CVE-2025-40598	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100573	WordPress - Dangerous File Upload - CVE:CVE-2025-5394	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100806	Wazuh Server - Remote Code Execution - CVE:CVE-2025-24016	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100824	CrushFTP - Remote Code Execution - CVE:CVE-2025-54309	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100824A	CrushFTP - Remote Code Execution - CVE:CVE-2025-54309 - 2	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100825	AMI MegaRAC - Auth Bypass - CVE:CVE-2024-54085	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100826	Kentico Xperience CMS - Auth Bypass - CVE:CVE-2025-2747	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100827	Kentico Xperience CMS - XSS - CVE:CVE-2025-2748	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100828	Node.js - Directory Traversal - CVE:CVE-2025-27210	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100829	WordPress:Plugin:Simple File List - Remote Code Execution - CVE:CVE-2025-34085	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100829A	WordPress:Plugin:Simple File List - Remote Code Execution - CVE:CVE-2025-34085 - 2	Log	Disabled	This is a New Detection

WAF - WAF Release - 2025-08-07 - Emergency

Thu, 07 Aug 2025 00:00:00 GMT

This week’s highlight focuses on two critical vulnerabilities affecting key infrastructure and enterprise content management platforms. Both flaws present significant remote code execution risks that can be exploited with minimal or no user interaction.

Key Findings

Squid (≤6.3) — CVE-2025-54574: A heap buffer overflow occurs when processing Uniform Resource Names (URNs). This vulnerability may allow remote attackers to execute arbitrary code on the server. The issue has been resolved in version 6.4.
Adobe AEM (≤6.5.23) — CVE-2025-54253: Due to a misconfiguration, attackers can achieve remote code execution without requiring any user interaction, posing a severe threat to affected deployments.

Impact

Both vulnerabilities expose critical attack vectors that can lead to full server compromise. The Squid heap buffer overflow allows remote code execution by crafting malicious URNs, which can lead to server takeover or denial of service. Given Squid’s widespread use as a caching proxy, this flaw could be exploited to disrupt network traffic or gain footholds inside secure environments.

Adobe AEM’s remote code execution vulnerability enables attackers to run arbitrary code on the content management server without any user involvement. This puts sensitive content, application integrity, and the underlying infrastructure at extreme risk. Exploitation could lead to data theft, defacement, or persistent backdoor installation.

These findings reinforce the urgency of updating to the patched versions — Squid 6.4 and Adobe AEM 6.5.24 or later — and reviewing configurations to prevent exploitation.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		100844	Adobe Experience Manager Forms - Remote Code Execution - CVE:CVE-2025-54253	N/A	Block	This is a New Detection
Cloudflare Managed Ruleset		100840	Squid - Buffer Overflow - CVE:CVE-2025-54574	N/A	Block	This is a New Detection

WAF - WAF Release - 2025-08-04

Mon, 04 Aug 2025 00:00:00 GMT

This week's highlight focuses on a series of significant vulnerabilities identified across widely adopted web platforms, from enterprise-grade CMS to essential backend administration tools. The findings reveal multiple vectors for attack, including critical flaws that allow for full server compromise and others that enable targeted attacks against users.

Key Findings

Sitecore (CVE-2025-34509, CVE-2025-34510, CVE-2025-34511): A hardcoded credential allows remote attackers to access administrative APIs. Once authenticated, they can exploit an additional vulnerability to upload arbitrary files, leading to remote code execution.
Grafana (CVE-2025-4123): A cross-site scripting (XSS) vulnerability allows an attacker to redirect users to a malicious website, which can then execute arbitrary JavaScript in the victim's browser.
LaRecipe (CVE-2025-53833): Through Server-Side Template Injection, attackers can execute arbitrary commands on the server, potentially access sensitive environment variables, and escalate access depending on server configuration.
CentOS WebPanel (CVE-2025-48703): A command injection vulnerability could allow a remote attacker to execute arbitrary commands on the server.
WordPress (CVE-2023-5561): This vulnerability allows unauthenticated attackers to determine the email addresses of users who have published public posts on an affected website.
WordPress Plugin - WPBookit (CVE-2025-6058): A missing file type validation allows unauthenticated attackers to upload arbitrary files to the server, creating the potential for remote code execution.
WordPress Theme - Motors (CVE-2025-4322): Due to improper identity validation, an unauthenticated attacker can change the passwords of arbitrary users, including administrators, to gain access to their accounts.

Impact

These vulnerabilities pose a multi-layered threat to widely adopted web technologies, ranging from enterprise-grade platforms like Sitecore to everyday solutions such as WordPress, and backend tools like CentOS WebPanel. The most severe risks originate in remote code execution (RCE) flaws found in Sitecore, CentOS WebPanel, LaRecipe, and the WPBookit plugin. These allow attackers to bypass security controls and gain deep access to the server, enabling them to steal sensitive data, deface websites, install persistent malware, or use the compromised server as a launchpad for further attacks.

The privilege escalation vulnerability is the Motors theme, which allows for a complete administrative account takeover on WordPress sites. This effectively hands control of the application to an attacker, who can then manipulate content, exfiltrate user data, and alter site functionality without needing to breach the server itself.

The Grafana cross-site scripting (XSS) flaw can be used to hijack authenticated user sessions or steal credentials, turning a trusted user's browser into an attack vector.

Meanwhile, the information disclosure flaw in WordPress core provides attackers with valid user emails, fueling targeted phishing campaigns that aim to secure the same account access achievable through the other exploits.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100535A	Sitecore - Dangerous File Upload - CVE:CVE-2025-34510, CVE:CVE-2025-34511	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100535	Sitecore - Information Disclosure - CVE:CVE-2025-34509	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100543	Grafana - Directory Traversal - CVE:CVE-2025-4123	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100545	WordPress - Information Disclosure - CVE:CVE-2023-5561	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100820	CentOS WebPanel - Remote Code Execution - CVE:CVE-2025-48703	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100821	LaRecipe - SSTI - CVE:CVE-2025-53833	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100822	WordPress:Plugin:WPBookit - Remote Code Execution - CVE:CVE-2025-6058	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100823	WordPress:Theme:Motors - Privilege Escalation - CVE:CVE-2025-4322	Log	Block	This is a New Detection

WAF - WAF Release - 2025-07-28

Mon, 28 Jul 2025 00:00:00 GMT

This week’s update spotlights several vulnerabilities across Apache Tomcat, MongoDB, and Fortinet FortiWeb. Several flaws related with a memory leak in Apache Tomcat can lead to a denial-of-service attack. Additionally, a code injection flaw in MongoDB's Mongoose library allows attackers to bypass security controls to access restricted data.

Key Findings

Fortinet FortiWeb (CVE-2025-25257): An improper neutralization of special elements used in a SQL command vulnerability in Fortinet FortiWeb versions allows an unauthenticated attacker to execute unauthorized SQL code or commands.
Apache Tomcat (CVE-2025-31650): A improper Input Validation vulnerability in Apache Tomcat that could create memory leak when incorrect error handling for some invalid HTTP priority headers resulted in incomplete clean-up of the failed request.
MongoDB (CVE-2024-53900, CVE:CVE-2025-23061): Improper use of $where in match and a nested $where filter with a populate() match in Mongoose can lead to search injection.

Impact

These vulnerabilities target user-facing components, web application servers, and back-end databases. A SQL injection flaw in Fortinet FortiWeb can lead to data theft or system compromise. A separate issue in Apache Tomcat involves a memory leak from improper input validation, which could be exploited for a denial-of-service (DoS) attack. Finally, a vulnerability in MongoDB's Mongoose library allows attackers to bypass security filters and access unauthorized data through malicious search queries.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100804	BerriAI - SSRF - CVE:CVE-2024-6587	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100812	Fortinet FortiWeb - Remote Code Execution - CVE:CVE-2025-25257	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100813	Apache Tomcat - DoS - CVE:CVE-2025-31650	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100815	MongoDB - Remote Code Execution - CVE:CVE-2024-53900, CVE:CVE-2025-23061	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100816	MongoDB - Remote Code Execution - CVE:CVE-2024-53900, CVE:CVE-2025-23061	Log	Block	This is a New Detection

WAF - WAF Release - 2025-07-21 - Emergency

Mon, 21 Jul 2025 00:00:00 GMT

This week's update highlights several high-impact vulnerabilities affecting Microsoft SharePoint Server. These flaws, involving unsafe deserialization, allow unauthenticated remote code execution over the network, posing a critical threat to enterprise environments relying on SharePoint for collaboration and document management.

Key Findings

Microsoft SharePoint Server (CVE-2025-53770): A critical vulnerability involving unsafe deserialization of untrusted data, enabling unauthenticated remote code execution over the network. This flaw allows attackers to execute arbitrary code on vulnerable SharePoint servers without user interaction.
Microsoft SharePoint Server (CVE-2025-53771): A closely related deserialization issue that can be exploited by unauthenticated attackers, potentially leading to full system compromise. The vulnerability highlights continued risks around insecure serialization logic in enterprise collaboration platforms.

Impact

Together, these vulnerabilities significantly weaken the security posture of on-premise Microsoft SharePoint Server deployments. By enabling remote code execution without authentication, they open the door for attackers to gain persistent access, deploy malware, and move laterally across enterprise environments.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		100817	Microsoft SharePoint - Deserialization - CVE:CVE-2025-53770	N/A	Block	This is a New Detection
Cloudflare Managed Ruleset		100818	Microsoft SharePoint - Deserialization - CVE:CVE-2025-53771	N/A	Block	This is a New Detection

For more details, also refer to our blog ↗.

WAF - WAF Release - 2025-07-21

Mon, 21 Jul 2025 00:00:00 GMT

This week's update spotlights several critical vulnerabilities across Citrix NetScaler Memory Disclosure, FTP servers and network application. Several flaws enable unauthenticated remote code execution or sensitive data exposure, posing a significant risk to enterprise security.

Key Findings

Wing FTP Server (CVE-2025-47812): A critical Remote Code Execution (RCE) vulnerability that enables unauthenticated attackers to execute arbitrary code with root/SYSTEM-level privileges by exploiting a Lua injection flaw.
Infoblox NetMRI (CVE-2025-32813): A remote unauthenticated command injection flaw that allows an attacker to execute arbitrary commands, potentially leading to unauthorized access.
Citrix Netscaler ADC (CVE-2025-5777, CVE-2023-4966): A sensitive information disclosure vulnerability, also known as "Citrix Bleed2", that allows the disclosure of memory and subsequent remote access session hijacking.
Akamai CloudTest (CVE-2025-49493): An XML External Entity (XXE) injection that could lead to read local files on the system by manipulating XML input.

Impact

These vulnerabilities affect critical enterprise infrastructure, from file transfer services and network management appliances to application delivery controllers. The Wing FTP RCE and Infoblox command injection flaws offer direct paths to deep system compromise, while the Citrix "Bleed2" and Akamai XXE vulnerabilities undermine system integrity by enabling session hijacking and sensitive data theft.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100804	BerriAI - SSRF - CVE:CVE-2024-6587	Log	Log	This is a New Detection
Cloudflare Managed Ruleset	100805	Wing FTP Server - Remote Code Execution - CVE:CVE-2025-47812	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100807	Infoblox NetMRI - Command Injection - CVE:CVE-2025-32813	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100808	Citrix Netscaler ADC - Buffer Error - CVE:CVE-2025-5777	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100809	Citrix Netscaler ADC - Information Disclosure - CVE:CVE-2023-4966	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100810	Akamai CloudTest - XXE - CVE:CVE-2025-49493	Log	Block	This is a New Detection

WAF - WAF Release - 2025-07-14

Mon, 14 Jul 2025 00:00:00 GMT

This week’s vulnerability analysis highlights emerging web application threats that exploit modern JavaScript behavior and SQL parsing ambiguities. Attackers continue to refine techniques such as attribute overloading and obfuscated logic manipulation to evade detection and compromise front-end and back-end systems.

Key Findings

XSS – Attribute Overloading: A novel cross-site scripting technique where attackers abuse custom or non-standard HTML attributes to smuggle payloads into the DOM. These payloads evade traditional sanitization logic, especially in frameworks that loosely validate attributes or trust unknown tokens.
XSS – onToggle Event Abuse: Exploits the lesser-used onToggle event (triggered by elements like <details>) to execute arbitrary JavaScript when users interact with UI elements. This vector is often overlooked by static analyzers and can be embedded in seemingly benign components.

Impact

These vulnerabilities target both user-facing components and back-end databases, introducing potential vectors for credential theft, session hijacking, or full data exfiltration. The XSS variants bypass conventional filters through overlooked HTML behaviors, while the obfuscated SQLi enables attackers to stealthily probe back-end logic, making them especially difficult to detect and block.

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		100798	XSS - Attribute Overloading	Log	Block	This is a New Detection
Cloudflare Managed Ruleset		100799	XSS - OnToggle	Log	Block	This is a New Detection

WAF - Increased IP List Limits for Enterprise Accounts

Mon, 07 Jul 2025 00:00:00 GMT

We have significantly increased the limits for IP Lists on Enterprise plans to provide greater flexibility and control:

Total number of lists: Increased from 10 to 1,000.
Total number of list items: Increased from 10,000 to 500,000.

Limits for other list types and plans remain unchanged. For more details, refer to the lists availability.

WAF - WAF Release - 2025-07-07

Mon, 07 Jul 2025 00:00:00 GMT

This week’s roundup uncovers critical vulnerabilities affecting enterprise VoIP systems, webmail platforms, and a popular JavaScript framework. The risks range from authentication bypass to remote code execution (RCE) and buffer handling flaws, each offering attackers a path to elevate access or fully compromise systems.

Key Findings

Next.js - Auth Bypass: A newly detected authentication bypass flaw in the Next.js framework allows attackers to access protected routes or APIs without proper authorization, undermining application access controls.
Fortinet FortiVoice (CVE-2025-32756): A buffer error vulnerability in FortiVoice systems that could lead to memory corruption and potential code execution or service disruption in enterprise telephony environments.
Roundcube (CVE-2025-49113): A critical RCE flaw allowing unauthenticated attackers to execute arbitrary PHP code via crafted requests, leading to full compromise of mail servers and user inboxes.

Impact

These vulnerabilities affect core business infrastructure, from web interfaces to voice communications and email platforms. The Roundcube RCE and FortiVoice buffer flaw offer potential for deep system access, while the Next.js auth bypass undermines trust boundaries in modern web apps.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100795	Next.js - Auth Bypass	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100796	Fortinet FortiVoice - Buffer Error - CVE:CVE-2025-32756	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100797	Roundcube - Remote Code Execution - CVE:CVE-2025-49113	Log	Disabled	This is a New Detection

WAF - WAF Release - 2025-06-16

Mon, 16 Jun 2025 00:00:00 GMT

This week’s roundup highlights multiple critical vulnerabilities across popular web frameworks, plugins, and enterprise platforms. The focus lies on remote code execution (RCE), server-side request forgery (SSRF), and insecure file upload vectors that enable full system compromise or data exfiltration.

Key Findings

Cisco IOS XE (CVE-2025-20188): Critical RCE vulnerability enabling unauthenticated attackers to execute arbitrary commands on network infrastructure devices, risking total router compromise.
Axios (CVE-2024-39338): SSRF flaw impacting server-side request control, allowing attackers to manipulate internal service requests when misconfigured with unsanitized user input.
vBulletin (CVE-2025-48827, CVE-2025-48828): Two high-impact RCE flaws enabling attackers to remotely execute PHP code, compromising forum installations and underlying web servers.
Invision Community (CVE-2025-47916): A critical RCE vulnerability allowing authenticated attackers to run arbitrary code in community platforms, threatening data and lateral movement risk.
CrushFTP (CVE-2025-32102, CVE-2025-32103): SSRF vulnerabilities in upload endpoint processing permit attackers to pivot internal network scans and abuse internal services.
Roundcube (CVE-2025-49113): RCE via email processing enables attackers to execute code upon viewing a crafted email — particularly dangerous for webmail deployments.
WooCommerce WordPress Plugin (CVE-2025-47577): Dangerous file upload vulnerability permits unauthenticated users to upload executable payloads, leading to full WordPress site takeover.
Cross-Site Scripting (XSS) Detection Improvements: Enhanced detection patterns.

Impact

These vulnerabilities span core systems — from routers to e-commerce to email. RCE in Cisco IOS XE, Roundcube, and vBulletin poses full system compromise. SSRF in Axios and CrushFTP supports internal pivoting, while WooCommerce’s file upload bug opens doors to mass WordPress exploitation.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100783	Cisco IOS XE - Remote Code Execution - CVE:CVE-2025-20188	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100784	Axios - SSRF - CVE:CVE-2024-39338	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100785	vBulletin - Remote Code Execution - CVE:CVE-2025-48827, CVE:CVE-2025-48828	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100786	Invision Community - Remote Code Execution - CVE:CVE-2025-47916	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100791	CrushFTP - SSRF - CVE:CVE-2025-32102, CVE:CVE-2025-32103	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100792	Roundcube - Remote Code Execution - CVE:CVE-2025-49113	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100793	XSS - Ontoggle	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100794	WordPress WooCommerce Plugin - Dangerous File Upload - CVE:CVE-2025-47577	Log	Block	This is a New Detection

WAF - WAF Release - 2025-06-09

Mon, 09 Jun 2025 00:00:00 GMT

This week’s update spotlights four critical vulnerabilities across CMS platforms, VoIP systems, and enterprise applications. Several flaws enable remote code execution or privilege escalation, posing significant enterprise risks.

Key Findings

WordPress OttoKit Plugin (CVE-2025-27007): Privilege escalation flaw allows unauthenticated attackers to create or elevate user accounts, compromising WordPress administrative control.
SAP NetWeaver (CVE-2025-42999): Remote Code Execution vulnerability enables attackers to execute arbitrary code on SAP NetWeaver systems, threatening core ERP and business operations.
Fortinet FortiVoice (CVE-2025-32756): Buffer error vulnerability may lead to memory corruption and potential code execution, directly impacting enterprise VoIP infrastructure.
Camaleon CMS (CVE-2024-46986): Remote Code Execution vulnerability allows attackers to gain full control over Camaleon CMS installations, exposing hosted content and underlying servers.

Impact

These vulnerabilities target widely deployed CMS, ERP, and VoIP systems. RCE flaws in SAP NetWeaver and Camaleon CMS allow full takeover of business-critical applications. Privilege escalation in OttoKit exposes WordPress environments to full administrative compromise. FortiVoice buffer handling issues risk destabilizing or fully compromising enterprise telephony systems.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100769	WordPress OttoKit Plugin - Privilege Escalation - CVE:CVE-2025-27007	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100770	SAP NetWeaver - Remote Code Execution - CVE:CVE-2025-42999	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100779	Fortinet FortiVoice - Buffer Error - CVE:CVE-2025-32756	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100780	Camaleon CMS - Remote Code Execution - CVE:CVE-2024-46986	Log	Block	This is a New Detection

WAF - WAF Release - 2025-06-02

Mon, 02 Jun 2025 00:00:00 GMT

This week’s roundup highlights five high-risk vulnerabilities affecting SD-WAN, load balancers, and AI platforms. Several flaws enable unauthenticated remote code execution or authentication bypass.

Key Findings

Versa Concerto SD-WAN (CVE-2025-34026, CVE-2025-34027): Authentication bypass vulnerabilities allow attackers to gain unauthorized access to SD-WAN management interfaces, compromising network segmentation and control.
Kemp LoadMaster (CVE-2024-7591): Remote Code Execution vulnerability enables attackers to execute arbitrary commands, potentially leading to full device compromise within enterprise load balancing environments.
AnythingLLM (CVE-2024-0759): Server-Side Request Forgery (SSRF) flaw allows external attackers to force the LLM backend to make unauthorized internal network requests, potentially exposing sensitive internal resources.
Anyscale Ray (CVE-2023-48022): Remote Code Execution vulnerability affecting distributed AI workloads, allowing attackers to execute arbitrary code on Ray cluster nodes.
Server-Side Request Forgery (SSRF) - Generic & Obfuscated Payloads: Ongoing advancements in SSRF payload techniques observed, including obfuscation and expanded targeting of cloud metadata services and internal IP ranges.

Impact

These vulnerabilities expose critical infrastructure across networking, AI platforms, and SaaS integrations. Unauthenticated RCE and auth bypass flaws in Versa Concerto, Kemp LoadMaster, and Anyscale Ray allow full system compromise. AnythingLLM and SSRF payload variants expand attack surfaces into internal cloud resources, sensitive APIs, and metadata services, increasing risk of privilege escalation, data theft, and persistent access.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100764	Versa Concerto SD-WAN - Auth Bypass - CVE:CVE-2025-34027	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100765	Versa Concerto SD-WAN - Auth Bypass - CVE:CVE-2025-34026	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100766	Kemp LoadMaster - Remote Code Execution - CVE:CVE-2024-7591	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100767	AnythingLLM - SSRF - CVE:CVE-2024-0759	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100768	Anyscale Ray - Remote Code Execution - CVE:CVE-2023-48022	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100781	SSRF - Generic Payloads	N/A	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100782	SSRF - Obfuscated Payloads	N/A	Disabled	This is a New Detection

WAF - Updated attack score model

Wed, 28 May 2025 00:00:00 GMT

We have deployed an updated attack score model focused on enhancing the detection of multiple false positives (FPs).

As a result of this improvement, some changes in observed attack scores are expected.

WAF - WAF Release - 2025-05-27

Tue, 27 May 2025 00:00:00 GMT

This week’s roundup covers nine vulnerabilities, including six critical RCEs and one dangerous file upload. Affected platforms span cloud services, CI/CD pipelines, CMSs, and enterprise backup systems. Several are now addressed by updated WAF managed rulesets.

Key Findings

Ingress-Nginx (CVE-2025-1098): Unauthenticated RCE via unsafe annotation handling. Impacts Kubernetes clusters.
GitHub Actions (CVE-2025-30066): RCE through malicious workflow inputs. Targets CI/CD pipelines.
Craft CMS (CVE-2025-32432): Template injection enables unauthenticated RCE. High risk to content-heavy sites.
F5 BIG-IP (CVE-2025-31644): RCE via TMUI exploit, allowing full system compromise.
AJ-Report (CVE-2024-15077): RCE through untrusted template execution. Affects reporting dashboards.
NAKIVO Backup (CVE-2024-48248): RCE via insecure script injection. High-value target for ransomware.
SAP NetWeaver (CVE-2025-31324): Dangerous file upload flaw enables remote shell deployment.
Ivanti EPMM (CVE-2025-4428, 4427): Auth bypass allows full access to mobile device management.
Vercel (CVE-2025-32421): Information leak via misconfigured APIs. Useful for attacker recon.

Impact

These vulnerabilities expose critical components across Kubernetes, CI/CD pipelines, and enterprise systems to severe threats including unauthenticated remote code execution, authentication bypass, and information leaks. High-impact flaws in Ingress-Nginx, Craft CMS, F5 BIG-IP, and NAKIVO Backup enable full system compromise, while SAP NetWeaver and AJ-Report allow remote shell deployment and template-based attacks. Ivanti EPMM’s auth bypass further risks unauthorized control over mobile device fleets.

GitHub Actions and Vercel introduce supply chain and reconnaissance risks, allowing malicious workflow inputs and data exposure that aid in targeted exploitation. Organizations should prioritize immediate patching, enhance monitoring, and deploy updated WAF and IDS signatures to defend against likely active exploitation.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100746	Vercel - Information Disclosure	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100754	AJ-Report - Remote Code Execution - CVE:CVE-2024-15077	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100756	NAKIVO Backup - Remote Code Execution - CVE:CVE-2024-48248	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100757	Ingress-Nginx - Remote Code Execution - CVE:CVE-2025-1098	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100759	SAP NetWeaver - Dangerous File Upload - CVE:CVE-2025-31324	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100760	Craft CMS - Remote Code Execution - CVE:CVE-2025-32432	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100761	GitHub Action - Remote Code Execution - CVE:CVE-2025-30066	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100762	Ivanti EPMM - Auth Bypass - CVE:CVE-2025-4428, CVE:CVE-2025-4427	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100763	F5 Big IP - Remote Code Execution - CVE:CVE-2025-31644	Log	Disabled	This is a New Detection

WAF - WAF Release - 2025-05-19

Mon, 19 May 2025 00:00:00 GMT

This week's analysis covers four vulnerabilities, with three rated critical due to their Remote Code Execution (RCE) potential. One targets a high-traffic frontend platform, while another targets a popular content management system. These detections are now part of the Cloudflare Managed Ruleset in Block mode.

Key Findings

Commvault Command Center (CVE-2025-34028) exposes an unauthenticated RCE via insecure command injection paths in the web UI. This is critical due to its use in enterprise backup environments.
BentoML (CVE-2025-27520) reveals an exploitable vector where serialized payloads in model deployment APIs can lead to arbitrary command execution. This targets modern AI/ML infrastructure.
Craft CMS (CVE-2024-56145) allows RCE through template injection in unauthenticated endpoints. It poses a significant risk for content-heavy websites with plugin extensions.
Apache HTTP Server (CVE-2024-38475) discloses sensitive server config data due to misconfigured mod_proxy behavior. While not RCE, this is useful for pre-attack recon.

Impact

These newly detected vulnerabilities introduce critical risk across modern web stacks, AI infrastructure, and content platforms: unauthenticated RCEs in Commvault, BentoML, and Craft CMS enable full system compromise with minimal attacker effort.

Apache HTTPD information leak can support targeted reconnaissance, increasing the success rate of follow-up exploits. Organizations using these platforms should prioritize patching and monitor for indicators of exploitation using updated WAF detection rules.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100745	Apache HTTP Server - Information Disclosure - CVE:CVE-2024-38475	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100747	Commvault Command Center - Remote Code Execution - CVE:CVE-2025-34028	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100749	BentoML - Remote Code Execution - CVE:CVE-2025-27520	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100753	Craft CMS - Remote Code Execution - CVE:CVE-2024-56145	Log	Block	This is a New Detection

WAF - Improved Payload Logging for WAF Managed Rules

Thu, 08 May 2025 00:00:00 GMT

We have upgraded WAF Payload Logging to enhance rule diagnostics and usability:

Targeted logging: Logs now capture only the specific portions of requests that triggered WAF rules, rather than entire request segments.
Visual highlighting: Matched content is visually highlighted in the UI for faster identification.
Enhanced context: Logs now include surrounding context to make diagnostics more effective.

Payload Logging is available to all Enterprise customers. If you have not used Payload Logging before, check how you can get started.

Note: The structure of the encrypted_matched_data field in Logpush has changed from Map<Field, Value> to Map<Field, {Before: bytes, Content: Value, After: bytes}>. If you rely on this field in your Logpush jobs, you should review and update your processing logic accordingly.

WAF - WAF Release - 2025-05-05

Mon, 05 May 2025 00:00:00 GMT

This week's analysis covers five CVEs with varying impact levels. Four are rated critical, while one is rated high severity. Remote Code Execution vulnerabilities dominate this set.

Key Findings

GFI KerioControl (CVE-2024-52875) contains an unauthenticated Remote Code Execution (RCE) vulnerability that targets firewall appliances. This vulnerability can let attackers gain root level system access, making this CVE particularly attractive for threat actors.

The SonicWall SMA vulnerabilities remain concerning due to their continued exploitation since 2021. These critical vulnerabilities in remote access solutions create dangerous entry points to networks.

Impact

Customers using the Managed Ruleset will receive rule coverage following this week's release. Below is a breakdown of the recommended prioritization based on current exploitation trends:

GFI KerioControl (CVE-2024-52875) - Highest priority; unauthenticated RCE
SonicWall SMA (Multiple vulnerabilities) - Critical for network appliances
XWiki (CVE-2025-24893) - High priority for development environments
Langflow (CVE-2025-3248) - Important for AI workflow platforms
MinIO (CVE-2025-31489) - Important for object storage implementations

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100724	GFI KerioControl - Remote Code Execution - CVE:CVE-2024-52875	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100748	XWiki - Remote Code Execution - CVE:CVE-2025-24893	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100750	SonicWall SMA - Dangerous File Upload - CVE:CVE-2021-20040, CVE:CVE-2021-20041, CVE:CVE-2021-20042	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100751	Langflow - Remote Code Execution - CVE:CVE-2025-3248	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100752	MinIO - Auth Bypass - CVE:CVE-2025-31489	Log	Block	This is a New Detection

WAF - WAF Release - 2025-04-26 - Emergency

Sat, 26 Apr 2025 00:00:00 GMT

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		100755	React.js - Router and Remix Vulnerability - CVE:CVE-2025-43864, CVE:CVE-2025-43865	Block	Block	This is a New Detection

WAF - WAF Release - 2025-04-22

Tue, 22 Apr 2025 00:00:00 GMT

Each of this week's rule releases covers a distinct CVE, with half of the rules targeting Remote Code Execution (RCE) attacks. Of the 6 CVEs covered, four were scored as critical, with the other two scored as high.

When deciding which exploits to tackle, Cloudflare tunes into the attackers' areas of focus. Cloudflare's network intelligence provides a unique lens into attacker activity – for instance, through the volume of blocked requests related with CVE exploits after updating WAF Managed Rules with new detections.

From this week's releases, one indicator that RCE is a "hot topic" attack type is the fact that the Oracle PeopleSoft RCE rule accounts for half of all of the new rule matches. This rule patches CVE-2023-22047, a high-severity vulnerability in the Oracle PeopleSoft suite that allows unauthenticated attackers to access PeopleSoft Enterprise PeopleTools data through remote code execution. This is particularly concerning because of the nature of the data managed by PeopleSoft – this can include payroll records or student profile information. This CVE, along with five others, are addressed with the latest detection update to WAF Managed Rules.

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100738	GitLab - Auth Bypass - CVE:CVE-2023-7028	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100740	Splunk Enterprise - Remote Code Execution - CVE:CVE-2025-20229	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100741	Oracle PeopleSoft - Remote Code Execution - CVE:CVE-2023-22047	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100742	CrushFTP - Auth Bypass - CVE:CVE-2025-31161	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100743	Ivanti - Buffer Error - CVE:CVE-2025-22457	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100744	Oracle Access Manager - Remote Code Execution - CVE:CVE-2021-35587	Log	Disabled	This is a New Detection

WAF - WAF Release - 2025-04-14

Mon, 14 Apr 2025 00:00:00 GMT

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		100739A	Next.js - Auth Bypass - CVE:CVE-2025-29927 - 2	Log	Disabled	This is a New Detection

WAF - WAF Release - 2025-04-02

Wed, 02 Apr 2025 00:00:00 GMT

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100732	Sitecore - Code Injection - CVE:CVE-2025-27218	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100733	Angular-Base64-Upload - Remote Code Execution - CVE:CVE-2024-42640	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100734	Apache Camel - Remote Code Execution - CVE:CVE-2025-29891	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100735	Progress Software WhatsUp Gold - Remote Code Execution - CVE:CVE-2024-4885	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100737	Apache Tomcat - Remote Code Execution - CVE:CVE-2025-24813	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100659	Common Payloads for Server-side Template Injection	N/A	Disabled	N/A
Cloudflare Managed Ruleset	100659	Common Payloads for Server-side Template Injection - Base64	N/A	Disabled	N/A
Cloudflare Managed Ruleset	100642	LDAP Injection	N/A	Disabled	N/A
Cloudflare Managed Ruleset	100642	LDAP Injection Base64	N/A	Disabled	N/A
Cloudflare Managed Ruleset	100005	DotNetNuke - File Inclusion - CVE:CVE-2018-9126, CVE:CVE-2011-1892, CVE:CVE-2022-31474	N/A	Disabled	N/A
Cloudflare Managed Ruleset	100527	Apache Struts - CVE:CVE-2021-31805	N/A	Block	N/A
Cloudflare Managed Ruleset	100702	Command Injection - CVE:CVE-2022-24108	N/A	Block	N/A
Cloudflare Managed Ruleset	100622C	Ivanti - Command Injection - CVE:CVE-2023-46805, CVE:CVE-2024-21887, CVE:CVE-2024-22024	N/A	Block	N/A
Cloudflare Managed Ruleset	100536C	GraphQL Command Injection	N/A	Disabled	N/A
Cloudflare Managed Ruleset	100536	GraphQL Injection	N/A	Disabled	N/A
Cloudflare Managed Ruleset	100536A	GraphQL Introspection	N/A	Disabled	N/A
Cloudflare Managed Ruleset	100536B	GraphQL SSRF	N/A	Disabled	N/A
Cloudflare Managed Ruleset	100559A	Prototype Pollution - Common Payloads	N/A	Disabled	N/A
Cloudflare Managed Ruleset	100559A	Prototype Pollution - Common Payloads - Base64	N/A	Disabled	N/A
Cloudflare Managed Ruleset	100734	Apache Camel - Remote Code Execution - CVE:CVE-2025-29891	N/A	Disabled	N/A

WAF - WAF Release - 2025-03-22 - Emergency

Sat, 22 Mar 2025 00:00:00 GMT

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		100739	Next.js - Auth Bypass - CVE:CVE-2025-29927	N/A	Disabled	This is a New Detection

Workers, Pages, WAF - New Managed WAF rule for Next.js CVE-2025-29927.

Sat, 22 Mar 2025 00:00:00 GMT

Update: Mon Mar 24th, 11PM UTC: Next.js has made further changes to address a smaller vulnerability introduced in the patches made to its middleware handling. Users should upgrade to Next.js versions 15.2.4, 14.2.26, 13.5.10 or 12.3.6. If you are unable to immediately upgrade or are running an older version of Next.js, you can enable the WAF rule described in this changelog as a mitigation.

Update: Mon Mar 24th, 8PM UTC: Next.js has now backported the patch for this vulnerability ↗ to cover Next.js v12 and v13. Users on those versions will need to patch to 13.5.9 and 12.3.5 (respectively) to mitigate the vulnerability.

Update: Sat Mar 22nd, 4PM UTC: We have changed this WAF rule to opt-in only, as sites that use auth middleware with third-party auth vendors were observing failing requests.

We strongly recommend updating your version of Next.js (if eligible) to the patched versions, as your app will otherwise be vulnerable to an authentication bypass attack regardless of auth provider.

Enable the Managed Rule (strongly recommended)

This rule is opt-in only for sites on the Pro plan or above in the WAF managed ruleset.

To enable the rule:

Head to Security > WAF > Managed rules in the Cloudflare dashboard for the zone (website) you want to protect.
Click the three dots next to Cloudflare Managed Ruleset and choose Edit
Scroll down and choose Browse Rules
Search for CVE-2025-29927 (ruleId: 34583778093748cc83ff7b38f472013e)
Change the Status to Enabled and the Action to Block. You can optionally set the rule to Log, to validate potential impact before enabling it. Log will not block requests.
Click Next
Scroll down and choose Save

This will enable the WAF rule and block requests with the x-middleware-subrequest header regardless of Next.js version.

Create a WAF rule (manual)

For users on the Free plan, or who want to define a more specific rule, you can create a Custom WAF rule to block requests with the x-middleware-subrequest header regardless of Next.js version.

To create a custom rule:

Head to Security > WAF > Custom rules in the Cloudflare dashboard for the zone (website) you want to protect.
Give the rule a name - e.g. next-js-CVE-2025-29927
Set the matching parameters for the rule match any request where the x-middleware-subrequest header exists per the rule expression below.

(len(http.request.headers["x-middleware-subrequest"]) > 0)

Set the action to 'block'. If you want to observe the impact before blocking requests, set the action to 'log' (and edit the rule later).
Deploy the rule.

Next.js CVE-2025-29927

We've made a WAF (Web Application Firewall) rule available to all sites on Cloudflare to protect against the Next.js authentication bypass vulnerability ↗ (CVE-2025-29927) published on March 21st, 2025.

Note: This rule is not enabled by default as it blocked requests across sites for specific authentication middleware.

This managed rule protects sites using Next.js on Workers and Pages, as well as sites using Cloudflare to protect Next.js applications hosted elsewhere.
This rule has been made available (but not enabled by default) to all sites as part of our WAF Managed Ruleset and blocks requests that attempt to bypass authentication in Next.js applications.
The vulnerability affects almost all Next.js versions, and has been fully patched in Next.js 14.2.26 and 15.2.4. Earlier, interim releases did not fully patch this vulnerability.
Users on older versions of Next.js (11.1.4 to 13.5.6) did not originally have a patch available, but this the patch for this vulnerability and a subsequent additional patch have been backported to Next.js versions 12.3.6 and 13.5.10 as of Monday, March 24th. Users on Next.js v11 will need to deploy the stated workaround or enable the WAF rule.

The managed WAF rule mitigates this by blocking external user requests with the x-middleware-subrequest header regardless of Next.js version, but we recommend users using Next.js 14 and 15 upgrade to the patched versions of Next.js as an additional mitigation.

WAF - WAF Release - 2025-03-19 - Emergency

Wed, 19 Mar 2025 00:00:00 GMT

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		100736	Generic HTTP Request Smuggling	N/A	Disabled	This is a New Detection

WAF - WAF Release - 2025-03-17

Mon, 17 Mar 2025 00:00:00 GMT

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100725	Fortinet FortiManager - Remote Code Execution - CVE:CVE-2023-42791, CVE:CVE-2024-23666	Log	Block
Cloudflare Managed Ruleset	100726	Ivanti - Remote Code Execution - CVE:CVE-2024-8190	Log	Block
Cloudflare Managed Ruleset	100727	Cisco IOS XE - Remote Code Execution - CVE:CVE-2023-20198	Log	Disabled	Fixed action value in changelog; no rule changes.
Cloudflare Managed Ruleset	100728	Sitecore - Remote Code Execution - CVE:CVE-2024-46938	Log	Block
Cloudflare Managed Ruleset	100729	Microsoft SharePoint - Remote Code Execution - CVE:CVE-2023-33160	Log	Block
Cloudflare Managed Ruleset	100730	Pentaho - Template Injection - CVE:CVE-2022-43769, CVE:CVE-2022-43939	Log	Block
Cloudflare Managed Ruleset	100700	Apache SSRF vulnerability CVE-2021-40438	N/A	Block

WAF - WAF Release - 2025-03-11 - Emergency

Tue, 11 Mar 2025 00:00:00 GMT

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		100731	Apache Camel - Code Injection - CVE:CVE-2025-27636	N/A	Block	This is a New Detection

WAF - WAF Release - 2025-03-10

Mon, 10 Mar 2025 00:00:00 GMT

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		100722	Ivanti - Information Disclosure - CVE:CVE-2025-0282	Log	Block	This is a New Detection
Cloudflare Managed Ruleset		100723	Cisco IOS XE - Information Disclosure - CVE:CVE-2023-20198	Log	Block	This is a New Detection

WAF - Updated leaked credentials database

Fri, 07 Mar 2025 00:00:00 GMT

Added new records to the leaked credentials database. The record sources are: Have I Been Pwned (HIBP) database, RockYou 2024 dataset, and another third-party database.

WAF - WAF Release - 2025-03-03

Mon, 03 Mar 2025 00:00:00 GMT

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		100721	Ivanti - Remote Code Execution - CVE:CVE-2024-13159, CVE:CVE-2024-13160, CVE:CVE-2024-13161	Log	Block	This is a New Detection
Cloudflare Managed Ruleset		100596	Citrix Content Collaboration ShareFile - Remote Code Execution - CVE:CVE-2023-24489	N/A	Block

WAF - WAF Release - 2025-02-24

Mon, 24 Feb 2025 00:00:00 GMT

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		100718A	SonicWall SSLVPN 2 - Auth Bypass - CVE:CVE-2024-53704	Log	Block	This is a New Detection
Cloudflare Managed Ruleset		100720	Palo Alto Networks - Auth Bypass - CVE:CVE-2025-0108	Log	Block	This is a New Detection

WAF - WAF Release - 2025-02-18

Tue, 18 Feb 2025 00:00:00 GMT

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100715	FortiOS - Auth Bypass - CVE:CVE-2024-55591	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100716	Ivanti - Auth Bypass - CVE:CVE-2021-44529	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100717	SimpleHelp - Auth Bypass - CVE:CVE-2024-57727	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100718	SonicWall SSLVPN - Auth Bypass - CVE:CVE-2024-53704	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100719	Yeti Platform - Auth Bypass - CVE:CVE-2024-46507	Log	Block	This is a New Detection

WAF - WAF Release - 2025-02-11

Tue, 11 Feb 2025 00:00:00 GMT

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100708	Aviatrix Network - Remote Code Execution - CVE:CVE-2024-50603	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100709	Next.js - Remote Code Execution - CVE:CVE-2024-46982	Log	Disabled	This is a New Detection
Cloudflare Managed Ruleset	100710	Progress Software WhatsUp Gold - Directory Traversal - CVE:CVE-2024-12105	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100711	WordPress - Remote Code Execution - CVE:CVE-2024-56064	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100712	WordPress - Remote Code Execution - CVE:CVE-2024-9047	Log	Block	This is a New Detection
Cloudflare Managed Ruleset	100713	FortiOS - Auth Bypass - CVE:CVE-2022-40684	Log	Block	This is a New Detection

WAF - Updated leaked credentials database

Tue, 04 Feb 2025 00:00:00 GMT

Added new records to the leaked credentials database from a third-party database.

WAF - WAF Release - 2025-01-21

Tue, 21 Jan 2025 00:00:00 GMT

Ruleset	Rule ID	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset		100303	Command Injection - Nslookup	Log	Block	This was released as
Cloudflare Managed Ruleset		100534	Web Shell Activity	Log	Block	This was released as

WAF - WAF Release - 2025-01-13

Mon, 13 Jan 2025 00:00:00 GMT

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Managed Ruleset	100704	Cleo Harmony - Auth Bypass - CVE:CVE-2024-55956, CVE:CVE-2024-55953	Log	Block	New Detection
Cloudflare Managed Ruleset	100705	Sentry - SSRF	Log	Block	New Detection
Cloudflare Managed Ruleset	100706	Apache Struts - Remote Code Execution - CVE:CVE-2024-53677	Log	Block	New Detection
Cloudflare Managed Ruleset	100707	FortiWLM - Remote Code Execution - CVE:CVE-2023-48782, CVE:CVE-2023-34993, CVE:CVE-2023-34990	Log	Block	New Detection
Cloudflare Managed Ruleset	100007C_BETA	Command Injection - Common Attack Commands		Disabled

WAF - WAF Release - 2025-01-06

Mon, 06 Jan 2025 00:00:00 GMT

Ruleset	Legacy Rule ID	Description	Previous Action	New Action	Comments
Cloudflare Specials	100678	Pandora FMS - Remote Code Execution - CVE:CVE-2024-11320	Log	Block	New Detection
Cloudflare Specials	100679	Palo Alto Networks - Remote Code Execution - CVE:CVE-2024-0012, CVE:CVE-2024-9474	Log	Block	New Detection
Cloudflare Specials	100680	Ivanti - Command Injection - CVE:CVE-2024-37397	Log	Block	New Detection
Cloudflare Specials	100681	Really Simple Security - Auth Bypass - CVE:CVE-2024-10924	Log	Block	New Detection
Cloudflare Specials	100682	Magento - XXE - CVE:CVE-2024-34102	Log	Block	New Detection
Cloudflare Specials	100683	CyberPanel - Remote Code Execution - CVE:CVE-2024-51567	Log	Block	New Detection
Cloudflare Specials	100684	Microsoft SharePoint - Remote Code Execution - CVE:CVE-2024-38094, CVE:CVE-2024-38024, CVE:CVE-2024-38023	Log	Block	New Detection
Cloudflare Specials	100685	CyberPanel - Remote Code Execution - CVE:CVE-2024-51568	Log	Block	New Detection
Cloudflare Specials	100686	Seeyon - Remote Code Execution	Log	Block	New Detection
Cloudflare Specials	100687	WordPress - Remote Code Execution - CVE:CVE-2024-10781, CVE:CVE-2024-10542	Log	Block	New Detection
Cloudflare Specials	100688	ProjectSend - Remote Code Execution - CVE:CVE-2024-11680	Log	Block	New Detection
Cloudflare Specials	100689	Palo Alto GlobalProtect - Remote Code Execution - CVE:CVE-2024-5921	Log	Block	New Detection
Cloudflare Specials	100690	Ivanti - Remote Code Execution - CVE:CVE-2024-37404	Log	Block	New Detection
Cloudflare Specials	100691	Array Networks - Remote Code Execution - CVE:CVE-2023-28461	Log	Block	New Detection
Cloudflare Specials	100692	CyberPanel - Remote Code Execution - CVE:CVE-2024-51378	Log	Block	New Detection
Cloudflare Specials	100693	Symfony Profiler - Auth Bypass - CVE:CVE-2024-50340	Log	Block	New Detection
Cloudflare Specials	100694	Citrix Virtual Apps - Remote Code Execution - CVE:CVE-2024-8069	Log	Block	New Detection
Cloudflare Specials	100695	MSMQ Service - Remote Code Execution - CVE:CVE-2023-21554	Log	Block	New Detection
Cloudflare Specials	100696	Nginxui - Remote Code Execution - CVE:CVE-2024-49368	Log	Block	New Detection
Cloudflare Specials	100697	Apache ShardingSphere - Remote Code Execution - CVE:CVE-2022-22733	Log	Block	New Detection
Cloudflare Specials	100698	Mitel MiCollab - Auth Bypass - CVE:CVE-2024-41713	Log	Block	New Detection
Cloudflare Specials	100699	Apache Solr - Auth Bypass - CVE:CVE-2024-45216	Log	Block	New Detection