{"id":"GHSA-qwww-vcr4-c8h2","summary":"React Router: RSC Mode CSRF Bypass Allows Action Execution Before 400 Response","details":"This is a follow up to CVE-2026-22030 to address related CSRF flows in unstable RSC code paths.\n\n\u003e [!NOTE]\n\u003e This only affects your application if you are using the unstable RSC APIs","modified":"2026-09-10T03:50:52.955441840Z","published":"2026-07-24T16:44:43Z","database_specific":{"cwe_ids":["CWE-352"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2026-07-24T16:44:43Z","nvd_published_at":null},"references":[{"type":"WEB","url":"https://github.com/remix-run/react-router/security/advisories/GHSA-qwww-vcr4-c8h2"},{"type":"WEB","url":"https://github.com/remix-run/react-router/pull/15353"},{"type":"WEB","url":"https://github.com/remix-run/react-router/commit/7a71c728ad116bd78699a258b2014ce9585729f5"},{"type":"WEB","url":"https://github.com/remix-run/react-router/commit/8ebd5df9932854547963e3255c8454e62430e05d"},{"type":"PACKAGE","url":"https://github.com/remix-run/react-router"},{"type":"WEB","url":"https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v830"},{"type":"WEB","url":"https://github.com/remix-run/react-router/blob/v7/CHANGELOG.md#v7182"},{"type":"WEB","url":"https://github.com/remix-run/react-router/releases/tag/react-router%407.18.2"},{"type":"WEB","url":"https://github.com/remix-run/react-router/releases/tag/react-router@8.3.0"},{"type":"WEB","url":"http://github.com/remix-run/react-router/pull/15311"}],"affected":[{"package":{"name":"react-router","ecosystem":"npm","purl":"pkg:npm/react-router"},"ranges":[{"type":"SEMVER","events":[{"introduced":"7.12.0"},{"fixed":"7.18.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-qwww-vcr4-c8h2/GHSA-qwww-vcr4-c8h2.json"}},{"package":{"name":"react-router","ecosystem":"npm","purl":"pkg:npm/react-router"},"ranges":[{"type":"SEMVER","events":[{"introduced":"8.0.0"},{"fixed":"8.3.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-qwww-vcr4-c8h2/GHSA-qwww-vcr4-c8h2.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"}]}