Changelog

New updates and improvements at Cloudflare.

WAF Release - 2026-05-04

May 04, 2026

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

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	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