CVE-2026-64642
Next.js: Middleware / Proxy bypass in App Router applications using Turbopack and single locale
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-285 |
| Vendor | vercel |
| Product | next.js |
| Published | Jul 27, 2026 |
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Affected Versions
vercel / next.js
>= 16.0.0, < 16.2.11
References
github.com: https://github.com/vercel/next.js/security/advisories/GHSA-6gpp-xcg3-4w24 github.com: https://github.com/vercel/next.js/pull/96014 github.com: https://github.com/vercel/next.js/commit/6bf4df14508ad6c0cd46af50c6051ee42f2d9151 github.com: https://github.com/vercel/next.js/releases/tag/v16.2.11