React Router: `handleDocumentRequest` CSRF check covers `POST` only; PUT/PATCH/DELETE bypass_CVE-2026-53663
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 protectio...