{"id":"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.","aliases":["GHSA-6gpp-xcg3-4w24"],"modified":"2026-08-12T03:51:26.685329996Z","published":"2026-07-27T17:45:40.761Z","related":["CGA-2j5c-c45p-994c"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-285"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64642.json"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/vercel/next.js","events":[{"introduced":"950609f96f694c5475d18cd2d72a0052ca04d4b9"},{"fixed":"9beca0821cf4606ae33466ed6f4fc75f2887a4da"},{"fixed":"6bf4df14508ad6c0cd46af50c6051ee42f2d9151"}],"database_specific":{"source":["CPE_RANGE","REFERENCES"],"cpe":"cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:*","extracted_events":[{"introduced":"16.0.0"},{"fixed":"16.2.11"}]}}],"versions":["v16.3.0-canary.91","v16.3.0-canary.90","v16.3.0-canary.89","v16.3.0-canary.88","v16.3.0-canary.87","v16.3.0-canary.86","v16.3.0-canary.85","v16.3.0-preview.6","v16.3.0-canary.84","v16.3.0-canary.83","v16.2.10","v16.3.0-canary.82","v16.3.0-canary.81","v16.3.0-canary.76","v16.3.0-canary.80","v16.3.0-canary.79","v16.3.0-canary.78","v16.3.0-canary.77","v16.3.0-canary.75","v16.3.0-canary.74","v16.3.0-canary.73","v16.3.0-canary.72","v16.3.0-canary.70","v16.3.0-canary.71","v16.3.0-canary.69","v16.3.0-canary.65","v16.3.0-canary.68","v16.3.0-preview.5","v16.3.0-canary.67","v16.3.0-canary.66","v16.3.0-preview.4","v16.3.0-canary.64","v16.3.0-canary.63","v16.3.0-canary.62","v16.3.0-canary.61","v16.3.0-canary.60","v16.3.0-canary.59","v16.3.0-canary.58","v16.3.0-canary.56","v16.3.0-canary.57","v16.3.0-canary.54","v16.3.0-canary.55","v16.3.0-canary.53","v16.3.0-canary.52","v16.3.0-canary.51","v16.3.0-canary.50","v16.3.0-canary.49","v16.3.0-canary.48","v16.2.9","v16.3.0-canary.47","v16.2.8","v16.3.0-canary.46","v16.3.0-canary.45","v16.3.0-canary.44","v16.3.0-canary.43","v16.3.0-canary.42","v16.3.0-canary.41","v16.3.0-canary.40","v16.3.0-canary.39","v16.3.0-canary.38","v16.3.0-canary.37","v16.3.0-canary.36","v16.3.0-canary.35","v16.3.0-canary.34","v16.3.0-canary.33","v16.3.0-canary.32","v16.3.0-canary.31","v16.3.0-canary.30","v16.3.0-canary.29","v16.3.0-canary.28","v16.3.0-canary.27","v16.3.0-canary.26","v16.3.0-canary.25","v16.3.0-canary.24","v16.3.0-canary.23","v16.3.0-canary.22","v16.3.0-canary.21","v16.3.0-canary.20","v16.2.6","v16.3.0-canary.19","v16.3.0-canary.18","v16.3.0-canary.17","v16.3.0-canary.16","v16.3.0-canary.15","v16.3.0-canary.12","v16.2.5","v16.3.0-canary.14","v16.3.0-canary.13","v16.3.0-canary.11","v16.3.0-canary.10","v16.3.0-canary.9","v16.3.0-canary.8","v16.3.0-canary.7","v16.3.0-canary.6","v16.3.0-canary.4","v16.3.0-canary.5","v16.3.0-canary.3","v16.2.4","v16.3.0-canary.2","v16.3.0-canary.1","v16.3.0-canary.0","v16.2.1-canary.46","v16.2.1-canary.45","v16.2.1-canary.44","v16.2.1-canary.43","v16.2.1-canary.42","v16.2.1-canary.41","v16.2.1-canary.40","v16.2.1-canary.39","v16.2.1-canary.38","v16.2.1-canary.37","v16.2.1-canary.36","v16.2.3","v16.2.1-canary.35","v16.2.1-canary.34","v16.2.1-canary.33","v16.2.1-canary.32","v16.2.1-canary.31","v16.2.1-canary.30","v16.2.1-canary.29","v16.2.1-canary.28","v16.2.1-canary.27","v16.2.1-canary.26","v16.2.1-canary.25","v16.2.1-canary.24","v16.2.1-canary.23","v16.2.1-canary.22","v16.2.1-canary.21","v16.2.1-canary.20","v16.2.1-canary.19","v16.2.1-canary.18","v16.2.2","v16.2.1-canary.17","v16.2.1-canary.16","v16.2.1-canary.15","v16.2.1-canary.14","v16.2.1-canary.13","v16.2.1-canary.11","v16.2.1-canary.12","v16.2.1-canary.10","v16.2.1","v16.2.1-canary.9","v16.2.1-canary.8","v16.2.1-canary.7","v16.2.1-canary.6","v16.2.1-canary.5","v16.2.1-canary.4","v16.2.1-canary.3","v16.2.1-canary.2","v16.2.1-canary.1","v16.2.1-canary.0","v16.2.0","v16.2.0-canary.104","v16.2.0-canary.103","v16.2.0-canary.102","v16.2.0-canary.101","v16.2.0-canary.100","v16.2.0-canary.99","v16.2.0-canary.98","v16.2.0-canary.97","v16.2.0-canary.96","v16.2.0-canary.95","v16.2.0-canary.94","v16.2.0-canary.93","v16.2.0-canary.92","v16.2.0-canary.91","v16.2.0-canary.90","v16.2.0-canary.89","v16.2.0-canary.88","v16.2.0-canary.87","v16.2.0-canary.86","v16.2.0-canary.85","v16.2.0-canary.84","v16.2.0-canary.83","v16.2.0-canary.82","v16.2.0-canary.81","v16.2.0-canary.78","v16.2.0-canary.80","v16.2.0-canary.79","v16.2.0-canary.77","v16.2.0-canary.76","v16.2.0-canary.75","v16.2.0-canary.74","v16.2.0-canary.71","v16.2.0-canary.73","v16.2.0-canary.69","v16.2.0-canary.72","v16.2.0-canary.70","v16.2.0-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