{"id":"GHSA-6gpp-xcg3-4w24","revision":"c91ba180309e4683a205c81d68c723e3","records":[{"revision":"c91ba180309e4683a205c81d68c723e3","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-6gpp-xcg3-4w24","aliases":["CVE-2026-64642"],"title":"Next.js: Middleware / Proxy bypass in App Router applications using Turbopack and single locale","description":"## Impact\n\nCrafted requests targeting Next.js applications using App Router built with Turbopack and a **single** entry in `config.i18n.locales` can bypass middleware/proxy based authentication.\n\n## Workarounds\n\nIf you cannot upgrade immediately, enforce authorization in the page's server-side data path instead of relying solely on middleware.","state":0,"publishedAt":"2026-07-22T22:59:38+00:00","modifiedAt":"2026-09-10T03:51:10.7005891+00:00","affected":[{"ecosystem":"npm","name":"next","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"16.0.0"},{"kind":"fixed","version":"16.2.11"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/vercel/next.js/security/advisories/GHSA-6gpp-xcg3-4w24","https://github.com/vercel/next.js/pull/96014","https://github.com/vercel/next.js/commit/6bf4df14508ad6c0cd46af50c6051ee42f2d9151","https://github.com/vercel/next.js","https://github.com/vercel/next.js/releases/tag/v16.2.11"],"sourceUrl":"https://github.com/advisories/GHSA-6gpp-xcg3-4w24","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-6gpp-xcg3-4w24","identifiers":["GHSA-6gpp-xcg3-4w24","CVE-2026-64642"]},"retained":false,"historicalAffected":[]}],"coverage":[]}