cR0w h0 h0Happy patch your React Server Components again Friday to all who celebrate. The patch for CVE-2025-55184 was incomplete and still leaves systems vulnerable to DoS.
https://www.facebook.com/security/advisories/cve-2025-67779
It was found that the fix addressing CVE-2025-55184 in React Server Components was incomplete and does not prevent a denial of service attack in a specific case. React Server Components versions 19.0.2, 19.1.3 and 19.2.2 are affected, allowing unsafe deserialization of payloads from HTTP requests to Server Function endpoints. This can cause an infinite loop that hangs the server process and may prevent future HTTP requests from being served.
Gary Blosser
nyanbinary
Merospit