{"id":"CVE-2026-64642","aliases":["GHSA-6gpp-xcg3-4w24"],"url":"https://o3.security/vulnerability/CVE-2026-64642","summary":"Next.js: Middleware / Proxy bypass in App Router applications using Turbopack and single locale","details":"Next.js is a React framework for building full-stack web applications. In versions 16.0.0 through 16.2.10, crafted 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. This issue has been fixed in version 16.2.11.","published":"2026-07-27T17:45:40.761Z","modified":"2026-08-12T03:51:26.685329996Z","cvss":null,"epss":{"score":0.00948,"percentile":0.58226,"asOf":"2026-08-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"next","fixedVersion":"16.2.11"}],"fix":{"url":"https://github.com/vercel/next.js/commit/6bf4df14508ad6c0cd46af50c6051ee42f2d9151","label":"vercel/next.js@6bf4df1"},"references":[{"type":"WEB","url":"https://github.com/vercel/next.js/releases/tag/v16.2.11"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64642.json"},{"type":"ADVISORY","url":"https://github.com/vercel/next.js/security/advisories/GHSA-6gpp-xcg3-4w24"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64642"},{"type":"FIX","url":"https://github.com/vercel/next.js/commit/6bf4df14508ad6c0cd46af50c6051ee42f2d9151"},{"type":"FIX","url":"https://github.com/vercel/next.js/pull/96014"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:26.685329996Z"}}