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CVE-2026-64642

CVE-2026-64642 · Next.js: Middleware / Proxy bypass in App Router applications using Turbopack and single locale

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 8.3 · High · EPSS 0.6% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • next.js

    Versions
    • >= 16.0.0, < 16.2.11: Affected

    No fix published

  • next npm

    Affected ranges
    • SEMVER: ≥ 16.0.0, < 16.2.11

    Update to 16.2.11

Original sources

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