WAF emergency rules for RCE and SQLi vulnerability exploitation
This emergency release adds four new managed WAF rules to block active exploitation of critical remote code execution and SQL injection vulnerabilities in popular web frameworks. The rules protect against unauthenticated RCE attacks via malicious path sequences and SQLi attacks via unsanitized request parameters.
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 | Rule ID | Legacy Rule ID | Description | Previous Action | New Action | Comments |
|---|---|---|---|---|---|---|
| Cloudflare Managed Ruleset | ...550664b6 | N/A | Generic Rules - Unauthenticated RCE | N/A | Block | This is a new detection. |
| Cloudflare Managed Ruleset | ...ed933fcc | N/A | Generic Rules - SQLi | N/A | Block | This is a new detection. |
| Cloudflare Free Ruleset | ...b5ec246a | N/A | Generic Rules - Unauthenticated RCE | N/A | Block | This is a new detection. |
| Cloudflare Free Ruleset | ...33697a1a | N/A | Generic Rules - SQLi | N/A | Block | This is a new detection. |
Source: original entry ↗
More from Cloudflare
Follow Cloudflare to get its new changes in your feed and email digest.
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.
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.
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.