{"id":"CVE-2026-53663","summary":"React Router: `handleDocumentRequest` CSRF check covers `POST` only; PUT/PATCH/DELETE bypass","details":"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.","aliases":["GHSA-84g9-w2xq-vcv6"],"modified":"2026-07-08T08:13:46.643765724Z","published":"2026-06-22T17:39:29.160Z","related":["CGA-mxwc-vww2-3q6q"],"database_specific":{"unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"2.17.3"},{"fixed":"2.17.5"}]}],"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53663.json","cwe_ids":["CWE-352"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53663.json"},{"type":"ADVISORY","url":"https://github.com/remix-run/react-router/security/advisories/GHSA-84g9-w2xq-vcv6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53663"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/remix-run/react-router","events":[{"introduced":"26653a6bcbf8a9c5541f99dcfb526eafadf13434"},{"fixed":"587d08fca6ca61e00f44c1eda95bf6e6a9ab76ef"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"7.12.0"},{"fixed":"7.15.1"}]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53663.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N"}]}