Cloudflare Issues Emergency WAF Rules for CVE-2026-111497 Brotli Flaw
Cloudflare has released an emergency Web Application Firewall (WAF) ruleset update tied to CVE-2026-111497, a memory flaw in Node.js’s Brotli decoder. Published on October 25, 2026, the update adds two new detections designed to surface potentially risky traffic related to the vulnerability while leaving blocking decisions to customers by default. What Cloudflare added The release introduces two rules: one that detects requests declaring a Brotli-compressed request body and another that…