CVE-2025-55182
critical CISA KEVMeta React Server Components Remote Code Execution Vulnerability
Vendor / product: Meta — React Server Components
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
10.0
10.0 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (cve-assign@fb.com)
Timeline (UTC)
Published: 2025-12-03 16:15
Modified: 2026-10-18 17:10
NVD status: Analyzed
Last synced 1 day ago
Verified against the source API 2026-10-27 07:07 UTC
Exploitation
Listed in CISA KEV
Added 2025-12-05 · due 2025-12-12
Known ransomware use: Known
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Affected products
facebook / react 19.0.0, 19.1.0, 19.1.1, 19.2.0
vercel / next.js ≥15.0.0 <15.0.5, ≥15.1.0 <15.1.9, ≥15.2.0 <15.2.6, ≥15.3.0 <15.3.6, ≥15.4.0 <15.4.8, ≥15.5.0 <15.5.7
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components
Vendor advisory: https://www.facebook.com/security/advisories/cve-2025-55182
Patch / mitigation: https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components
Patch / mitigation: http://www.openwall.com/lists/oss-security/2025/12/03/4
References
- https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-componen... cve-assign@fb.com
- https://www.facebook.com/security/advisories/cve-2025-55182 cve-assign@fb.com
- http://www.openwall.com/lists/oss-security/2025/12/03/4 af854a3a-2127-422b-91ae-364da2661108
- https://news.ycombinator.com/item?id=46136026 af854a3a-2127-422b-91ae-364da2661108
- https://aws.amazon.com/blogs/security/china-nexus-cyber-threat-groups-rapidly-exploit-reac... 134c704f-9b21-4f2e-91b3-4a467353bcc0
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55182 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
CISA KEV — fetched 2026-10-27 06:50 UTC · record ↗
NVD CVE API 2.0 — fetched 2026-10-27 07:07 UTC · record ↗