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CVE-2026-64642

Next.js: Middleware / Proxy bypass in App Router applications using Turbopack and single locale

Published: Jul 27, 2026Updated: Jul 29, 2026 Sources: CVE List NVDCWE-285
8.2HIGH
NVD MITRE
EPSS Score
0.9%
Top 42.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-285

Affected Products

vercel
commercial·US
next.jsLibraryLibrary
OSS Libraries / web-framework

Exploitability

Official Patch Available
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References

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
and 1 more references View all →
News mentions
1

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