CVE-2025-55182

10.0 CRITICAL CISA KEV - Actively Exploited
Published: December 03, 2025 Modified: December 10, 2025
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components
Source: cve-assign@fb.com
Patch Vendor Advisory
https://www.facebook.com/security/advisories/cve-2025-55182
Source: cve-assign@fb.com
Vendor Advisory
http://www.openwall.com/lists/oss-security/2025/12/03/4
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Patch Third Party Advisory
https://news.ycombinator.com/item?id=46136026
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking
https://aws.amazon.com/blogs/security/china-nexus-cyber-threat-groups-rapidly-exploit-react2shell-vulnerability-cve-2025-55182/
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55182
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

6 reference(s) from NVD

Quick Stats

CVSS v3 Score
10.0 / 10.0
EPSS (Exploit Probability)
48.7%
98th percentile
Exploitation Status
Actively Exploited
Remediation due: 2025-12-12

Weaknesses (CWE)

CWE-502

Affected Vendors

vercel facebook

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