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.

CVSS v3 vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Weaknesses (CWE)

CWE-502

Threats tracking this CVE

• React2Shell CVE-2025-55182 — Multiple Threat Actors Actively Exploiting React Server Components RCE (CVSS 10.0) — CRITICAL

References

• https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components
• https://www.facebook.com/security/advisories/cve-2025-55182
• http://www.openwall.com/lists/oss-security/2025/12/03/4
• https://news.ycombinator.com/item?id=46136026
• https://aws.amazon.com/blogs/security/china-nexus-cyber-threat-groups-rapidly-exploit-react2shell-vulnerability-cve-2025-55182/
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55182

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