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Vulnerability · Published Oct 1, 2026 · Assigned by redhat

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

Medium 4.3

In plain English

A medium-severity security flaw in Red Hat Satellite 6 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.3%top 74.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Satellite 6.16 for RHEL 8 see references
Red Hat Red Hat Satellite 6.16 for RHEL 9 see references
Red Hat Red Hat Satellite 6.17 for RHEL 9 see references
Red Hat Red Hat Satellite 6.18 for RHEL 9 see references
Red Hat Red Hat Satellite 6.19 for RHEL 9 see references
Red Hat Red Hat Satellite 6 see references
Red Hat Red Hat Satellite 6 see references

Weakness: CWE-203 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References