{"action":"Upgrade react-router to 7.14.0 or later.","affected":[{"fixed":"7.14.0","introduced":"7.0.0"}],"component":"react-router","cve_ids":["CVE-2026-34077"],"ecosystem":"npm","epss":0.00294,"exploited":false,"fixed_versions":["7.14.0"],"ghsa_id":"GHSA-rxv8-25v2-qmq8","id":"tcs_01M5KGA9RWXPVY6HH4J12K14DN","modified_at":"2026-06-04T15:41:24.712338Z","published_at":"2026-06-04T15:23:51Z","references":["https://osv.dev/vulnerability/GHSA-rxv8-25v2-qmq8","https://github.com/remix-run/react-router/security/advisories/GHSA-rxv8-25v2-qmq8","https://nvd.nist.gov/vuln/detail/CVE-2026-34077","https://github.com/remix-run/react-router/commit/59811921d3c7d599077b8cadccdcd65a233165e0","https://github.com/jacob-ebey/turbo-stream/blob/v2.4.1/src/flatten.ts#L175-L177","https://github.com/jacob-ebey/turbo-stream/blob/v2.4.1/src/unflatten.ts#L185-L189","https://github.com/remix-run/react-router"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-rxv8-25v2-qmq8","url":"https://osv.dev/vulnerability/GHSA-rxv8-25v2-qmq8"}],"summary":"React Router vulnerable to Denial of Service via reflected user input in single-fetch"}