Apache ActiveMQ CVE-2026-34197: Critical RCE Vulnerability Under Active Exploitation
In April 2026, a critical remote code execution (RCE) vulnerability, CVE-2026-34197, was identified in Apache ActiveMQ Classic. This flaw resides in the Jolokia JMX-HTTP bridge, which, due to an overly permissive default access policy, allows authenticated attackers to execute arbitrary code on the broker's JVM. Exploitation involves invoking specific MBeans operations with crafted discovery URIs that load malicious Spring XML configurations, leading to full system compromise. Affected versions include Apache ActiveMQ Broker before 5.19.4 and from 6.0.0 before 6.2.3. ([sentinelone.com](https://www.sentinelone.com/vulnerability-database/cve-2026-34197/?utm_source=openai)) The urgency to address this vulnerability is heightened by its addition to CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating active exploitation in the wild. Organizations using affected versions should prioritize upgrading to patched releases and review access controls to mitigate potential threats. ([securityonline.info](https://securityonline.info/apache-activemq-rce-jolokia-cve-2026-34197/?utm_source=openai))
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