CVE-2026-42588: Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Remote Code Execution via Jolokia addNetworkConnector
Improper Input Validation, Improper Control of Generation of Code ('Code Injection') vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ All, 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).
An authenticated attacker can invoke these operations with a crafted discovery URI that triggers the VM transport's brokerConfig parameter using the "masterslave:// " URL which can allow loading a 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 5.19.7, from 6.0.0 before 6.2.6; Apache ActiveMQ All: before 5.19.7, from 6.0.0 before 6.2.6; Apache ActiveMQ: before 5.19.7, from 6.0.0 before 6.2.6.
Users are recommended to upgrade to version 5.19.7 or 6.2.6, which fixes the issue.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Apache ActiveMQ Brokerto a version that resolves this vulnerability.Fixed in 5.19.7 - Upgrade
Upgrade
Apache ActiveMQ Brokerto a version that resolves this vulnerability.Fixed in 6.2.6 - Upgrade
Upgrade
Apache ActiveMQ Allto a version that resolves this vulnerability.Fixed in 5.19.7 - Upgrade
Upgrade
Apache ActiveMQ Allto a version that resolves this vulnerability.Fixed in 6.2.6 - Upgrade
Upgrade
Apache ActiveMQto a version that resolves this vulnerability.Fixed in 5.19.7 - Upgrade
Upgrade
Apache ActiveMQto a version that resolves this vulnerability.Fixed in 6.2.6
Event History
Frequently Asked Questions
What is the severity of CVE-2026-42588?
The severity of CVE-2026-42588 is rated as high, with a CVSS score of 8.1.
How do I fix CVE-2026-42588?
To mitigate CVE-2026-42588, you should restrict access to the Jolokia JMX-HTTP bridge and validate all inputs.
What types of attacks are possible with CVE-2026-42588?
CVE-2026-42588 allows for remote code execution, enabling attackers to inject and execute arbitrary code.
Which software versions are affected by CVE-2026-42588?
CVE-2026-42588 affects Apache ActiveMQ Broker, Apache ActiveMQ All, and Apache ActiveMQ.
What causes the vulnerability in CVE-2026-42588?
CVE-2026-42588 is caused by improper input validation and control of code generation in the Jolokia addNetworkConnector feature.