Vulnerability · Published Jan 10, 2026 · Assigned by GitHub_M
CVE-2026-22030React Router has CSRF issue in Action/Server Action Request Processing
Medium 6.5
In plain English
A medium-severity cross-site request forgery in react-router from remix-run. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @remix-run/server-runtime | 2.17.3 | GHSA-h5cw-625j-3rxh |
| npm | react-router | 7.12.0 | GHSA-h5cw-625j-3rxh |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| remix-run | react-router | @remix-run/router < 2.17.3react-router >= 7.0.0, < 7.12.0 |
Weakness: CWE-346, CWE-352 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N