{"id":"GHSA-qwww-vcr4-c8h2","title":"React Router: RSC Mode CSRF Bypass Allows Action Execution Before 400 Response","summary":"React Router: RSC Mode CSRF Bypass Allows Action Execution Before 400 Response","severity":"high","cwe":["CWE-352"],"vendor":"react-router","product":"react-router","ecosystem":"npm","affected":["react-router >= 7.12.0, < 8.3.0"],"patched":["react-router 8.3.0"],"published":"2026-07-24","updated":"2026-07-24","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-qwww-vcr4-c8h2","references":[{"url":"https://github.com/remix-run/react-router/security/advisories/GHSA-qwww-vcr4-c8h2"},{"url":"https://github.com/remix-run/react-router/commit/7a71c728ad116bd78699a258b2014ce9585729f5"},{"url":"https://github.com/remix-run/react-router/blob/main/CHANGELOG.md#v830"},{"url":"https://github.com/remix-run/react-router/releases/tag/react-router@8.3.0"},{"url":"http://github.com/remix-run/react-router/pull/15311"},{"url":"https://github.com/advisories/GHSA-qwww-vcr4-c8h2"}],"tags":["ghsa","npm"],"ingestedAt":"2026-07-24T17:34:27.676Z","slug":"GHSA-qwww-vcr4-c8h2","body":"## Overview\n\nThis is a follow up to CVE-2026-22030 to address related CSRF flows in unstable RSC code paths.\n\n> [!NOTE]\n> This only affects your application if you are using the unstable RSC APIs\n\n## Affected packages\n\n- `react-router >= 7.12.0, < 8.3.0`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `react-router 8.3.0`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}