megachangelog
Improvement2026-03-23

WAF rule enhancements for improved detection coverage

Cloudflare deployed new and improved WAF rules to enhance detection resilience against web attacks, including new command injection detections and merged rules for better behavioral coverage.

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.



RulesetRule IDLegacy Rule IDDescriptionPrevious ActionNew ActionComments
Cloudflare Managed Ruleset...97321c6cN/ACommand Injection - Generic 9 - URI VectorLogDisabledThis is a new detection.
Cloudflare Managed Ruleset...1eb7a999N/A Command Injection - Generic 9 - Header Vector Log Disabled This is a new detection.
Cloudflare Managed Ruleset...0677175fN/A Command Injection - Generic 9 - Body Vector Log Disabled This is a new detection.
Cloudflare Managed Ruleset...479da68fN/APHP, vBulletin, jQuery File Upload - Code Injection, Dangerous File Upload - CVE:CVE-2018-9206, CVE:CVE-2019-17132 (beta)LogBlockThis 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: ...824b817c)
wafsecuritydetectionrulescoverage

Source: original entry ↗

More from Cloudflare

Follow Cloudflare to get its new changes in your feed and email digest.

Improvement2026.8.2100.0

Cloudflare One Client for macOS 2026.8.2100.0

GA release for macOS Cloudflare One Client with improved split tunnel handling that no longer briefly blocks traffic during reconnects, support for non-RFC 1918 local IPv4 networks, faster connects with lower memory use, and numerous reliability fixes across DNS, reauthentication, and client stability.

macosvpnreliabilityperformancedns
Improvement2026.8.2100.0

Cloudflare One Client for Windows 2026.8.2100.0

This GA release improves split tunnel reliability, adds support for non-RFC 1918 local networks, optimizes connection performance with faster reconnections and lower memory usage, and includes numerous bug fixes for DNS, registration, and network handling. The client now features a service recovery mechanism that automatically restarts on system unlock and better handles large hosts files without blocking traffic.

windowsvpnclienttunneldns
Improvement2026.8.2100.0

Cloudflare One Client for Linux 2026.8.2100.0

New GA release for Linux with improved split tunnel handling that no longer briefly blocks traffic during reconnects, support for non-RFC 1918 local IPv4 networks, faster tunnel reconnections, and lower memory usage. Includes numerous stability and reliability fixes for DNS, reconnection behavior, and crash issues.

linuxvpnclientperformancestability
See all Cloudflare changes →