CVE-2025-55182

A pre-authentication remote code execution vulnerability exists in React Server Components versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. The vulnerable code unsafely deserializes payloads from HTTP requests to Server Function endpoints.

• https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components

  cve-assign@fb.com Patch Vendor Advisory
• https://www.facebook.com/security/advisories/cve-2025-55182

  cve-assign@fb.com Vendor Advisory
• http://www.openwall.com/lists/oss-security/2025/12/03/4

  af854a3a-2127-422b-91ae-364da2661108 Mailing List Patch Third Party Advisory
• https://news.ycombinator.com/item?id=46136026

  af854a3a-2127-422b-91ae-364da2661108 Issue Tracking
• https://aws.amazon.com/blogs/security/china-nexus-cyber-threat-groups-rapidly-exploit-react2shell-vulnerability-cve-2025-55182/

  134c704f-9b21-4f2e-91b3-4a467353bcc0 Third Party Advisory
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55182

  134c704f-9b21-4f2e-91b3-4a467353bcc0 US Government Resource