GHSA-fmh4-wr37-44fp
React Server Components are Vulnerable to RCE
Quick fix
GHSA-fmh4-wr37-44fp — @vitejs/plugin-rsc: upgrade to the fixed version with the command below.
npm install @vitejs/plugin-rsc@0.5.3Details
### 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/plugin-rsc@0.5.3` or later.
### Workarounds
Applications not using server-side React or React Server Components are unaffected.
Are you affected?
Enter the version of the package you're using.
Affected packages
References
- https://github.com/facebook/react/security/advisories/GHSA-fv66-9v8q-g76r[WEB]
- https://github.com/vercel/next.js/security/advisories/GHSA-9qr9-h5gf-34mp[WEB]
- https://github.com/vitejs/vite-plugin-react/security/advisories/GHSA-fmh4-wr37-44fp[WEB]
- https://github.com/vitejs/vite-plugin-react[PACKAGE]
- https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components[WEB]