CVE-2026-56098Rubygem-katello: improper authorization logic allows resource enumeration

Descripción

A flaw was found in rubygem-katello. The RegistryProxiesController in Katello contains an authorization bypass vulnerability due to an execution fall-through in the registry_authorize filter. While the application identifies unauthorized requests and triggers an error response via the unauthorized method, it fails to halt the execution of the current code path (missing return statement). This failure in the control flow allows the application to proceed into subsequent business logic and database validation filters. Consequently, the application reveals its internal state through differential responses, allowing an unprivileged attacker to enumerate valid Users, Organizations, and Products across the entire instance.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• RHSA-2026:74503 vendor-advisory
• RHSA-2026:74504 vendor-advisory
• RHSA-2026:74505 vendor-advisory
• RHSA-2026:74506 vendor-advisory
• https://access.redhat.com/security/cve/CVE-2026-56098 vdb-entry
• RHBZ#2490542 issue-tracking
• http://www.openwall.com/lists/oss-security/2026/10/07/3