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CVE-2025-55182Meta React Server Components Remote Code Execution Vulnerability
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.
10.0 CRITICALEPSS 99.73%⚡ Known Exploited (CISA KEV)NVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 10.0 | CRITICAL | 3.1Meta (CNA) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
CISA required action
⚡ Known exploited · remediation due Dec 12, 2025
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Details
- CVE ID
- CVE-2025-55182
- Status
- Analyzed
- Assigner (CNA)
- Meta
- Published
- Dec 3, 2025
- Last modified
- 2026-10-18 17:10 UTC
- Weaknesses
Affected Products
As published by the CNA in the CVE record.
Metareact-server-dom-webpack3 version ranges
- 19.0.0 through 19.0.0
- 19.1.0 through 19.1.1
- 19.2.0 through 19.2.0
Metareact-server-dom-turbopack3 version ranges
- 19.0.0 through 19.0.0
- 19.1.0 through 19.1.1
- 19.2.0 through 19.2.0
Metareact-server-dom-parcel3 version ranges
- 19.0.0 through 19.0.0
- 19.1.0 through 19.1.1
- 19.2.0 through 19.2.0
References
- react.dev https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components
- facebook.com https://www.facebook.com/security/advisories/cve-2025-55182
- openwall.com http://www.openwall.com/lists/oss-security/2025/12/03/4
- news.ycombinator.com https://news.ycombinator.com/item?id=46136026
- aws.amazon.com https://aws.amazon.com/blogs/security/china-nexus-cyber-threat-groups-rapidly-exploit-react2shell-vulnerability-cve-2025-55182/
- cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55182