CVE-2026-64642

highpriority · track · 33EPSS 0.006 · 50 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.64% (50th) EPSS

CVSS 8.2 · high

Is it mine?

7 products

Check your exposure

Who says so?

4 sources

enisa_euvd · cert_bund · nvd · osv

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

8.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.8–8.3

v3.18.2highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 4.2

v4.08.3highCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:Nsecondary · ENISA EU

v4.08.3highCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · security-advisories@github.com

v4.04.8mediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-285USCWE-285US

affected products (7)

Products and version ranges known to be affected.

IBM QRadar SIEMall versionscert_bundDEcpe:/a:ibm:qradar_siem:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
vercel next.js< 15.5.21cert_bundDE
vercel next.js< 16.2.11cert_bundDE
vercel next.js16.0.0, → 16.2.11enisa_euvdEU
vercel next.js16.0.0 → 16.2.11nvdUScpe:2.3:a:vercel:next.js:*:*:*:*:*:*:*:*
npm next16.0.0 → 16.2.11osvUSpkg:npm/next

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2468Vercel Next.js: Mehrere SchwachstellenDeutsch2026-07-21csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Vercel Next.js ausnutzen, um Daten zu manipulieren, um Informationen offenzulegen, um einen Denial of Service Angriff durchzuführen, und um Sicherheitsvorkehrungen zu umgehen.
GHSA-6gpp-xcg3-4w24Next.js: Middleware / Proxy bypass in App Router applications using Turbopack and single locale2026-07-22ghsa · osvUS
## Impact 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. ## Workarounds If you cannot upgrade immediately, enforce authorization in the page's server-side data path instead of relying solely on middleware.

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd cert_bund nvd osv NVD CVE.org MITRE

published 2026-07-27modified 2026-10-24

references (8)

External citations — patches, advisories, analysis.

scry

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