Description
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.
Scoring
- CVSS: 10 (CRITICAL, 3.1)
- EPSS exploitation probability: Not yet available
- EPSS percentile: Not yet available
CISA KEV status
- Added to KEV: 2025-12-05
- Remediation due date: 2025-12-12
- Known ransomware campaign use: Known
Weakness types (CWE)
- CWE-502
- CWE-502
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
More from Meta
- No other tracked CVEs for this vendor yet.
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