EUVD-2026-19588CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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4Description
Improper Input Validation, Improper Control of Generation of Code ('Code Injection') vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ. Apache ActiveMQ Classic exposes the Jolokia JMX-HTTP bridge at /api/jolokia/ on the web console. The default Jolokia access policy permits exec operations on all ActiveMQ MBeans (org.apache.activemq:*), including BrokerService.addNetworkConnector(String) and BrokerService.addConnector(String). An authenticated attacker can invoke these operations with a crafted discovery URI that triggers the VM transport's brokerConfig parameter to load a remote Spring XML application context using ResourceXmlApplicationContext. Because Spring's ResourceXmlApplicationContext instantiates all singleton beans before the BrokerService validates the configuration, arbitrary code execution occurs on the broker's JVM through bean factory methods such as Runtime.exec(). This issue affects Apache ActiveMQ Broker: before 5.19.4, from 6.0.0 before 6.2.3; Apache ActiveMQ: . Users are recommended to upgrade to version 5.19.5 or 6.2.3, which fixes the issue.
Analysis
Remote code execution in Apache ActiveMQ Classic versions before 5.19.5 and 6.0.0-6.2.2 allows authenticated attackers to execute arbitrary code on the broker's JVM via Jolokia MBean operations. Attackers with low-privilege web console access can invoke BrokerService.addNetworkConnector() with a malicious discovery URI containing a VM transport brokerConfig parameter that loads remote Spring XML contexts, triggering bean instantiation and code execution through factory methods like Runtime.exec(). …
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Remediation
Within 24 hours: Identify and document all ActiveMQ Classic deployments, versions, and network exposure (particularly web console access). Within 7 days: Restrict web console access to trusted networks only via firewall or network segmentation; disable Jolokia MBean operations if not operationally required. …
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