by Kastro
Paper/Archive/CVE-2025-55182

CVE-2025-55182

Meta react-server-dom-webpack — Meta React Server Components Remote Code Execution Vulnerability

KEV · due 12 Decransomware useEPSS 100%public exploitSSVC actCVSS 10.0
critical.is priorityof 100
100
CVSS 10.0 (CNA)10.0 / 10 × 3030.0In CISA KEV+3030.0EPSS percentile 100.01.000 × 2020.0Exploit: SSVC active+1010.0SSVC exploitation: active+1010.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
react-server-dom-webpack19.0.0 – 19.0.0–CNA
react-server-dom-webpack19.1.0 – 19.1.1–CNA
react-server-dom-webpack19.2.0 – 19.2.0–CNA
react-server-dom-turbopack19.0.0 – 19.0.0–CNA
react-server-dom-turbopack19.1.0 – 19.1.1–CNA
react-server-dom-turbopack19.2.0 – 19.2.0–CNA
react-server-dom-parcel19.0.0 – 19.0.0–CNA
react-server-dom-parcel19.1.0 – 19.1.1–CNA
react-server-dom-parcel19.2.0 – 19.2.0–CNA

Scores by source

Meta (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: active · Automatable: yes · Technical impact: total

References

reffacebook.com/security/advisories/cve-2025-55182refreact.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-componentsrefaws.amazon.com/blogs/security/china-nexus-cyber-threat-groups-rapidly-exploit-react2shell-vulnerability-cve-2025-55182refcisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55182refopenwall.com/lists/oss-security/2025/12/03/4refnews.ycombinator.com/item?id=46136026kevcisa.gov/known-exploited-vulnerabilities-catalog