What’s Vulnerable › Vulnerabilities
CVE-2026-22030: React Router has CSRF issue in Action/Server Action Request Processing
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-01-10 · updated 2026-06-17
- Weakness: CWE-346
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 products
- remix-run react-router: from 7.0.0 through 7.11.0
- Shopify Remix-Run/React: before 2.17.3 — fixed in 2.17.3
How to fix
Upgrade to a fixed version: Shopify Remix-Run/React 2.17.3. Check the vendor advisory for mitigations.
References
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