Apache ActiveMQ Classic contains a high-impact vulnerability that affects versions before 5.19.4 and versions 6.0.0 through 6.2.2. An authenticated user can misuse Jolokia, the web console’s management interface, to monitor and control the broker, which functions as the central messaging service. By submitting specially crafted URIs, an attacker can abuse broker management functions to execute malicious commands and potentially achieve remote code execution. This vulnerability has been assigned CVE-2026-34197. More details about affected versions and references are available at NVD.
Apache ActiveMQ Classic is a Java Message Service (JMS)-based broker that supports asynchronous publish/subscribe and queue-based messaging. Producers send messages to the broker, while consumers receive them through topics or queues.
This article analyzes CVE-2026-34197, the vulnerable code path, affected versions, and detection considerations.