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.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | react-server-dom-parcel | >= 19.0.0, < 19.0.2, >= 19.1.0, < 19.1.3, >= 19.2.0, < 19.2.2 | 19.0.2, 19.1.3, 19.2.2 |
| npm package | react-server-dom-turbopack | >= 19.0.0, < 19.0.2, >= 19.1.0, < 19.1.3, >= 19.2.0, < 19.2.2 | 19.0.2, 19.1.3, 19.2.2 |
| npm package | react-server-dom-webpack | >= 19.0.0, < 19.0.2, >= 19.1.0, < 19.1.3, >= 19.2.0, < 19.2.2 | 19.0.2, 19.1.3, 19.2.2 |
References
- https://github.com/facebook/react/security/advisories/GHSA-2m3v-v2m8-q956
- https://nvd.nist.gov/vuln/detail/CVE-2025-55184
- https://github.com/facebook/react
- 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
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness (CWE)
CWE-400, CWE-502- Platform
- npm
- Package
react-server-dom-parcel, react-server-dom-turbopack, react-server-dom-webpack- Disclosed
- 11.12.2025
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-2m3v-v2m8-q956 - CC BY 4.0
Vulnerability history: react-server-dom-turbopack
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 8
- First → latest
- 12.2025 07.2026
- Without a fix
- 0
- Exploited in attacks
- 1
Severity breakdown
- Critical 1
- High 6
- Medium 1
Disclosures per year
- 2025: 4
- 2026: 4
-
Denial of Service Vulnerability in React Server Components this entry
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.