CVE-2026-56098 MEDIUM

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

Vendor Red Hat
Product Red Hat Satellite 6
Weakness CWE-203
Published October 1, 2026
Last update October 1, 2026

CVSS base score

4.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

October 1, 2026 CVE published
October 1, 2026 Record updated