low3.1
CVE-2026-53663
React Router: Potential CSRF via PUT/PATCH/DELETE document requests
Impact
React Router is a router for React. From 7.12.0 until 7.15.1, certain CSRF checks in React Router v7 Framework Mode were insufficient and run on POST requests, but were bypassed on PUT/PATCH/DELETE requests. This is a low severity vulnerability because modern browser protections (CORS preflight, SameSite cookies) already block the cross-origin attack vectors that this missing CSRF check would otherwise gate. This vulnerability is fixed in 7.15.1.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | react-router | >= 7.12.0, < 7.15.1 | 7.15.1 |
| npm | @remix-run/server-runtime | >= 2.17.3, < 2.17.5 | 2.17.5 |