GHSA-f22v-gfqf-p8f3MediumCVSS 5.4
React Router has stored XSS via unescaped Location header in prerendered redirect HTML
🔗 CVE IDs covered (1)
📋 Description
When using React Router v7 Framework Mode with Pre-rendering enabled, an improper neutralization of the HTTP Location header value can permit Cross-Site Scripting (XSS) in statically generated HTML files if the redirect location comes from an untrusted source.
[!NOTE] This does not impact your React Router application if you are using Declarative Mode (
<BrowserRouter>) or Data Mode (createBrowserRouter/<RouterProvider>).
🎯 Affected products1
- npm/react-router:>= 7.5.1, < 7.13.2
🔗 References (6)
- https://github.com/remix-run/react-router/security/advisories/GHSA-f22v-gfqf-p8f3
- https://nvd.nist.gov/vuln/detail/CVE-2026-33244
- https://github.com/remix-run/react-router/pull/14880
- https://github.com/remix-run/react-router/commit/ea28e66926460656815cee9b7f2dfaa872513a8c
- https://github.com/remix-run/react-router/blob/react-router%407.13.2/CHANGELOG.md#v7132
- https://github.com/advisories/GHSA-f22v-gfqf-p8f3