{"action":"Upgrade react-router to 6.30.4 or later.","affected":[{"fixed":"7.14.1","introduced":"7.0.0"},{"fixed":"6.30.4","introduced":"6.7.0"}],"component":"react-router","cve_ids":["CVE-2026-40181"],"ecosystem":"npm","epss":0.00221,"exploited":false,"fixed_versions":["7.14.1","6.30.4"],"ghsa_id":"GHSA-2j2x-hqr9-3h42","id":"tcs_01M5KET9WG9WV5B6XADSX7X333","modified_at":"2026-09-10T03:50:55.348600076Z","published_at":"2026-06-03T20:58:01Z","references":["https://osv.dev/vulnerability/GHSA-2j2x-hqr9-3h42","https://github.com/remix-run/react-router/security/advisories/GHSA-2j2x-hqr9-3h42","https://nvd.nist.gov/vuln/detail/CVE-2026-40181","https://github.com/remix-run/react-router/commit/d77f6b1","https://github.com/remix-run/react-router"],"severity":{"label":"medium","score":6.1},"sources":[{"source":"osv","source_id":"GHSA-2j2x-hqr9-3h42","url":"https://osv.dev/vulnerability/GHSA-2j2x-hqr9-3h42"},{"source":"nvd","source_id":"CVE-2026-40181","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40181"}],"summary":"React Router's same-origin redirect with path starting // causes open redirect via protocol-relative URL reinterpretation"}