CVE-2026-64642

HighCVSS 8.2/10Last modified Oct 24, 2026

Description

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.

Metrics

CVSS 3.1 8.2/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Weakness enumeration

CWE-285

Affected software

Vendor	Product	Versions
vercel	next.js	>= 16.0.0, < 16.2.11

References

https://github.com/vercel/next.js/commit/6bf4df14508ad6c0cd46af50c6051ee42f2d9151Patch
https://github.com/vercel/next.js/pull/96014Issue Tracking, Patch
https://github.com/vercel/next.js/releases/tag/v16.2.11Product, Release Notes
https://github.com/vercel/next.js/security/advisories/GHSA-6gpp-xcg3-4w24Vendor Advisory

Timeline

Published: Jul 27, 2026
Last modified: Oct 24, 2026
NVD status: Analyzed

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