Cloudflare's recent outage was caused by emergency mitigations for a critical vulnerability (CVE-2025-55182) in React Server Components, allowing unauthorized remote code execution. The incident affected about 28% of Cloudflare's HTTP traffic but was not due to a cyber attack. The flaw is being actively exploited by hacking groups, primarily linked to China.
Cloudflare Blames Today’s Outage on Emergency React2Shell Patch
