CSRF in Remix-Run React-Router
CVE-2026-22030
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.
EPSS: 0.002 (8.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.
Affected products
- Remix-run React-router — versions @remix-run/router < 2.17.3, react-router >= 7.0.0, < 7.12.0
- Shopify React-router
- Shopify Remix-run\/react
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-22030?
- CVE-2026-22030 is a medium-severity vulnerability in Remix-Run React-Router, classified under Origin Validation Error. CVSS score: 6.5/10. Published 2026-01-10.
- How severe is CVE-2026-22030?
- Medium severity. CVSS v3 base score is 6.5 out of 10.