CVE-2025-55182
Meta react-server-dom-webpack, Meta react-server-dom-turbopack, Meta react-server-dom-parcel
Published 3 Dec 2025 · updated 4 Aug 2026 · Analyzed
Exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on 5 Dec 2025, with a remediation deadline of 12 Dec 2025 for US federal agencies. It has been used in ransomware campaigns.
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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.
References
- react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components · Patch, Vendor Advisory
- www.facebook.com/security/advisories/cve-2025-55182 · Vendor Advisory
- www.openwall.com/lists/oss-security/2025/12/03/4 · Mailing List, Patch, Third Party Advisory
- news.ycombinator.com/item?id=46136026 · Issue Tracking
- aws.amazon.com/blogs/security/china-nexus-cyber-threat-groups-rapidly-exploit-react2shell-vulnerability-cve-2025-55182/ · Third Party Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55182 · US Government Resource