{"id":"GHSA-26hh-7cqf-hhc6","revision":"5f341bbe7935498aa19405038c587e49","records":[{"revision":"5f341bbe7935498aa19405038c587e49","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-26hh-7cqf-hhc6","aliases":["CVE-2026-45109"],"title":"Next.js has a Middleware / Proxy bypass in App Router applications via segment-prefetch routes - Incomplete Fix Follow-Up","description":"### Impact\n\n\nIt was found that the fix addressing [CVE-2026-44575](https://github.com/vercel/next.js/security/advisories/GHSA-267c-6grr-h53f) did not apply to `middleware.ts` with Turbopack. Refer to  [CVE-2026-44575](https://github.com/vercel/next.js/security/advisories/GHSA-267c-6grr-h53f) for further details.\n\n### References \n\n- [CVE CVE-2026-44575](https://github.com/vercel/next.js/security/advisories/GHSA-267c-6grr-h53f)","state":0,"publishedAt":"2026-05-11T16:21:19+00:00","modifiedAt":"2026-09-10T03:50:45.3243308+00:00","affected":[{"ecosystem":"npm","name":"next","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"15.2.0"},{"kind":"fixed","version":"15.5.18"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"next","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"16.0.0"},{"kind":"fixed","version":"16.2.6"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/vercel/next.js/security/advisories/GHSA-267c-6grr-h53f","https://github.com/vercel/next.js/security/advisories/GHSA-26hh-7cqf-hhc6","https://nvd.nist.gov/vuln/detail/CVE-2026-45109","https://github.com/vercel/next.js","https://github.com/vercel/next.js/releases/tag/v15.5.18","https://github.com/vercel/next.js/releases/tag/v16.2.6"],"sourceUrl":"https://github.com/advisories/GHSA-26hh-7cqf-hhc6","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-26hh-7cqf-hhc6","identifiers":["GHSA-26hh-7cqf-hhc6","CVE-2026-45109"]},"retained":false,"historicalAffected":[]}],"coverage":[]}