High [CVE-2026-64642] Authentication bypass leading to unauthorized access
This high-severity Red Hat Linux advisory covers CVE-2026-64642 affecting Red Hat Build of Keycloak, Red Hat Ceph Storage 5, Red Hat Ceph Storage 6.
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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. This vulnerability allows for unauthorized access, leading to a high impact on confidentiality through information disclosure.
This could enable unauthorized access to web applications utilizing such a configuration within Red Hat products. Red Hat severity: Important — CVSS 8.2 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N).
Weakness: CWE-807. Affected Red Hat products: Red Hat Build of Keycloak; Red Hat Ceph Storage 5; Red Hat Ceph Storage 6; Red Hat Ceph Storage 7; Red Hat Ceph Storage 8; Red Hat Ceph Storage 9; Red Hat Connectivity Link 1; Red Hat JBoss Enterprise Application Platform 7; Red Hat Single Sign-On 7.
- 16.0.0
- 16.2.10
Official advisory · high-confidence parse· fetched 12 days ago·verify at source
- 16.2.11
Official advisory · high-confidence parse· fetched 12 days ago·verify at source
Mitigation
Upgrade to a fixed release: 16.2.11. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 12 days ago·verify at source
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