Headline
GHSA-7gmr-mq3h-m5h9: Denial of Service Vulnerability in React Server Components
Impact
It was found that the fix to address CVE-2025-55184 in React Server Components was incomplete and does not prevent a denial of service attack in a specific case.
We recommend updating immediately.
The vulnerability exists in versions 19.0.2, 19.1.3, and 19.2.2 of:
These issues are present in the patches published on December 11th, 2025.
Patches
Fixes were back ported to versions 19.0.3, 19.1.4, and 19.2.3.
If you are using any of the above packages please upgrade to any of the fixed versions immediately.
If your app’s React code does not use a server, your app is not affected by this vulnerability. If your app does not use a framework, bundler, or bundler plugin that supports React Server Components, your app is not affected by this vulnerability.
References
See the blog post for more information and upgrade instructions.
- GitHub Advisory Database
- GitHub Reviewed
- CVE-2025-67779
Denial of Service Vulnerability in React Server Components
High severity GitHub Reviewed Published Dec 12, 2025 in facebook/react • Updated Dec 12, 2025
Package
npm react-server-dom-parcel (npm)
Affected versions
>= 19.0.2, < 19.0.3
>= 19.1.3, < 19.1.4
>= 19.2.2, < 19.2.3
Patched versions
19.0.3
19.1.4
19.2.3
npm react-server-dom-turbopack (npm)
>= 19.0.2, < 19.0.3
>= 19.1.3, < 19.1.4
>= 19.2.2, < 19.2.3
npm react-server-dom-webpack (npm)
>= 19.0.2, < 19.0.3
>= 19.1.3, < 19.1.4
>= 19.2.2, < 19.2.3
Published to the GitHub Advisory Database
Dec 12, 2025
Last updated
Dec 12, 2025
Related news
The React team has released fixes for two new types of flaws in React Server Components (RSC) that, if successfully exploited, could result in denial-of-service (DoS) or source code exposure. The team said the issues were found by the security community while attempting to exploit the patches released for CVE-2025-55182 (CVSS score: 10.0), a critical bug in RSC that has since been weaponized in