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CVE

GHSA-fmh4-wr37-44fp

React Server Components are Vulnerable to RCE
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CVE

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 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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
-
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/facebook/react/security/advisories/GHSA-fv66-9v8q-g76r, https://github.com/vercel/next.js/security/advisories/GHSA-9qr9-h5gf-34mp, https://github.com/vitejs/vite-plugin-react/security/advisories/GHSA-fmh4-wr37-44fp, https://github.com/vitejs/vite-plugin-react, https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components

Severity

10

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
10
EPSS Probability
0%
EPSS Percentile
0%
Introduced Version
0
Fix Available
0.5.3

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