GHSA-84g9-w2xq-vcv6 React Router: Potential CSRF via PUT/PATCH/DELETE document requests

• npm react-router: >= 7.12.0, < 7.15.1 → fixed in 7.15.1 • npm @remix-run/server-runtime: >= 2.17.3, < 2.17.5 → fixed in 2.17.5

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. > [!NOTE] > This does not impact your React Router application if you are using Declarative Mode (``) or Data Mode (`createBrowserRouter`/``).