CVE-2026-64642 (GCVE-0-2026-64642)
Vulnerability from cvelistv5 – Published: 2026-07-27 17:45 – Updated: 2026-07-28 15:20
VLAI
EPSS
VEX
Title
Next.js: Middleware / Proxy bypass in App Router applications using Turbopack and single locale
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-28 15:07 UTC
CWE
- CWE-285 - Improper Authorization
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/vercel/next.js/security/adviso… | x_refsource_CONFIRM |
| https://github.com/vercel/next.js/pull/96014 | x_refsource_MISC |
| https://github.com/vercel/next.js/commit/6bf4df14… | x_refsource_MISC |
| https://github.com/vercel/next.js/releases/tag/v16.2.11 | x_refsource_MISC |
Impacted products
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{
"name": "https://github.com/vercel/next.js/commit/6bf4df14508ad6c0cd46af50c6051ee42f2d9151",
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},
{
"lang": "es",
"value": "Next.js es un framework de React para construir aplicaciones web full-stack. En las versiones 16.0.0 a la 16.2.10, las solicitudes manipuladas dirigidas a aplicaciones Next.js que utilizan App Router construidas con Turbopack y una \u00fanica entrada en config.i18n.locales pueden eludir la autenticaci\u00f3n basada en middleware/proxy. Este problema ha sido solucionado en la versi\u00f3n 16.2.11."
}
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"id": "CVE-2026-64642",
"lastModified": "2026-10-24T13:10:00.147",
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"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
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"scope": "UNCHANGED",
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"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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