React Router is a router for React. In versions 7.0.0 through 7.17.0, the manifest endpoint could be accessed via unauthenticated targeted requests that would put heavy load on the server and slow down response times. This issue is a follow up to CVE-2026-42342, and does not does not impact React Router applications using Declarative Mode (<BrowserRouter>) or Data Mode (createBrowserRouter/<RouterProvider>). This issue has been fixed in version 7.18.0.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/remix-run/react-router/commit/09e6020d1950e54f361f7ad00938ecd4dde60929 Patch
- https://github.com/remix-run/react-router/pull/15186 Issue Tracking, Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.7 · shopifyNVD modified 2026-10-24 13:10
Affected (CPE criteria) 1
cpe:2.3:a:shopify:react-router:*:*:*:*:*:node.js:*:*
References 6
- https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v7180 Release Notes
- https://github.com/remix-run/react-router/commit/09e6020d1950e54f361f7ad00938ecd4dde60929 Patch
- https://github.com/remix-run/react-router/pull/15186 Issue Tracking, Patch
- https://github.com/remix-run/react-router/releases/tag/[email protected] Release Notes
- https://github.com/remix-run/react-router/security/advisories/GHSA-8x6r-g9mw-2r78 Third Party Advisory
- https://github.com/remix-run/react-router/security/advisories/GHSA-chx6-hx7r-mcp5 Third Party Advisory