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
