Cloudflare blames today's outage on emergency React2Shell patch

Published on December 5, 2025

Cloudflare has blamed today's outage on the emergency patching of a critical React remote code execution vulnerability, which is now actively exploited in attacks. [...]

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Pharma firm Inotiv discloses data breach after ransomware attack

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Chinese Hackers Have Started Exploiting the Newly Disclosed React2Shell Vulnerability

December 5, 2025
Two hacking groups with ties to China have been observed weaponizing the newly disclosed security flaw in React Server Components (RSC) within hours of it becoming public knowledge.The vulnerability in question is CVE-2025-55182 (CVSS score: 10.0), aka React2Shell, which allows unauthenticated remote code execution. It has been addressed in React versions 19.0.1, 19.1.2, and 19.2.1.According