{"id":"GHSA-84g9-w2xq-vcv6","summary":"React Router: Potential CSRF via PUT/PATCH/DELETE document requests","details":"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.\n\n\u003e [!NOTE]\n\u003e This does not impact your React Router application if you are using [Declarative Mode](https://reactrouter.com/start/modes#framework) (`\u003cBrowserRouter\u003e`) or [Data Mode](https://reactrouter.com/start/modes#data) (`createBrowserRouter`/`\u003cRouterProvider\u003e`).","aliases":["CVE-2026-53663"],"modified":"2026-09-10T03:51:08.115397519Z","published":"2026-06-15T20:06:15Z","database_specific":{"github_reviewed_at":"2026-06-15T20:06:15Z","nvd_published_at":null,"cwe_ids":["CWE-352"],"severity":"LOW","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/remix-run/react-router/security/advisories/GHSA-84g9-w2xq-vcv6"},{"type":"PACKAGE","url":"https://github.com/remix-run/react-router"}],"affected":[{"package":{"name":"react-router","ecosystem":"npm","purl":"pkg:npm/react-router"},"ranges":[{"type":"SEMVER","events":[{"introduced":"7.12.0"},{"fixed":"7.15.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-84g9-w2xq-vcv6/GHSA-84g9-w2xq-vcv6.json"}},{"package":{"name":"@remix-run/server-runtime","ecosystem":"npm","purl":"pkg:npm/%40remix-run/server-runtime"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.17.3"},{"fixed":"2.17.5"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-84g9-w2xq-vcv6/GHSA-84g9-w2xq-vcv6.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N"}]}