GHSA-fmh4-wr37-44fp: React Server Components are Vulnerable to RCE
Summary @vitejs/plugin-rsc vendors react-server-dom-webpack, which contained an unauthenticated remote code execution vulnerability in versions prior to 19.0.1, 19.1.2, and 19.2.1. See details in React repository's advisory https://github.com/facebook/react/security/advisories/GHSA-fv66-9v8q-g76r Impact Applications using affected versions of @vitejs/plugin-rsc are vulnerable to unauthenticated remote code execution…
Published Dec 3, 2025 · Updated Dec 11, 2025
Affected packages
@vitejs/plugin-rsc
- Ecosystem
- npm
- Affected
- <= 0.5.2
- Fixed in
- 0.5.3
- Check
npm ls @vitejs/plugin-rsc
Advisory details
From the GitHub Advisory Database (CC BY 4.0).
Summary
@vitejs/plugin-rsc vendors react-server-dom-webpack, which contained an unauthenticated remote code execution vulnerability in versions prior to 19.0.1, 19.1.2, and 19.2.1. See details in React repository's advisory https://github.com/facebook/react/security/advisories/GHSA-fv66-9v8q-g76r
Impact
Applications using affected versions of @vitejs/plugin-rsc are vulnerable to unauthenticated remote code execution through deserialization of untrusted data. An attacker can execute arbitrary code remotely without authentication, affecting confidentiality, integrity, and availability.
Recommendations
Upgrade immediately to @vitejs/[email protected] or later.
Workarounds
Applications not using server-side React or React Server Components are unaffected.
References
- https://github.com/facebook/react/security/advisories/GHSA-fv66-9v8q-g76r
- https://github.com/vitejs/vite-plugin-react/security/advisories/GHSA-fmh4-wr37-44fp
- https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components
- https://github.com/vercel/next.js/security/advisories/GHSA-9qr9-h5gf-34mp
- https://github.com/advisories/GHSA-fmh4-wr37-44fp
How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology