CVE-2026-22030

React Router has CSRF issue in Action/Server Action Request Processing

State: Published
Severity: 6.5 Medium
Published: Jan 10, 2026
Updated: Jan 12, 2026
Reserved: Jan 5, 2026

Description

React Router is a router for React. In @remix-run/server-runtime version prior to 2.17.3. and react-router 7.0.0 through 7.11.0, React Router (or Remix v2) is vulnerable to CSRF attacks on document POST requests to UI routes when using server-side route action handlers in Framework Mode, or when using React Server Actions in the new unstable RSC modes. There is no impact if Declarative Mode (<BrowserRouter>) or Data Mode (createBrowserRouter/<RouterProvider>) is being used. This issue has been patched in @remix-run/server-runtime version 2.17.3 and react-router version 7.12.0.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N	GitHub_M

Weaknesses

CWE-346 Origin Validation Error
CWE-352 Cross-Site Request Forgery (CSRF)

Affected Products

Product	Versions
react-routerremix-run	@remix-run/router < 2.17.3Affected react-router >= 7.0.0, < 7.12.0Affected

References

https://github.com/remix-run/react-router/security/advisories/GHSA-h5cw-625j-3rxh

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