CVE-2026-54475

A flaw was found in Apache ActiveMQ. Temporary destinations, which are designed to be private to a specific connection, can be accessed by other connections due to a missing authorization check. This allows an unauthorized connection to consume messages from another connection's temporary destination, leading to information disclosure.

Red Hat products ship Apache ActiveMQ Classic components as transitive dependencies. The vulnerability is in the Classic ActiveMQ broker's temporary destination isolation, where access control is enforced only client-side, allowing a different connection to consume messages from another connection's temporary destination. Red Hat AMQ Broker is based on Apache ActiveMQ Artemis, which has its own temporary destination implementation. The Classic broker's temporary destination logic is not exercised at runtime in Red Hat product deployments.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.