Headline
GHSA-2m3v-v2m8-q956: Denial of Service Vulnerability in React Server Components
Impact
There is a denial of service vulnerability in React Server Components.
React recommends updating immediately.
The vulnerability exists in versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0 and 19.2.1 of:
These issues are present in the patches published last week.
Patches
Fixes were back ported to versions 19.0.2, 19.1.3, and 19.2.2.
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.
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- GitHub Advisory Database
- GitHub Reviewed
- CVE-2025-55184
Denial of Service Vulnerability in React Server Components
High severity GitHub Reviewed Published Dec 11, 2025 in facebook/react • Updated Dec 11, 2025
Package
npm react-server-dom-parcel (npm)
Affected versions
>= 19.0.0, < 19.0.2
>= 19.1.0, < 19.1.3
>= 19.2.0, < 19.2.2
Patched versions
19.0.2
19.1.3
19.2.2
npm react-server-dom-turbopack (npm)
>= 19.0.0, < 19.0.2
>= 19.1.0, < 19.1.3
>= 19.2.0, < 19.2.2
npm react-server-dom-webpack (npm)
>= 19.0.0, < 19.0.2
>= 19.1.0, < 19.1.3
>= 19.2.0, < 19.2.2
Description
Impact
There is a denial of service vulnerability in React Server Components.
React recommends updating immediately.
The vulnerability exists in versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0 and 19.2.1 of:
- react-server-dom-webpack
- react-server-dom-parcel
- react-server-dom-turbopack
These issues are present in the patches published last week.
Patches
Fixes were back ported to versions 19.0.2, 19.1.3, and 19.2.2.
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.
References
- GHSA-2m3v-v2m8-q956
- https://nvd.nist.gov/vuln/detail/CVE-2025-55184
- https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components
- https://www.facebook.com/security/advisories/cve-2025-55184
Published to the GitHub Advisory Database
Dec 11, 2025
Last updated
Dec 11, 2025
EPSS score
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