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High8.8Apache Software Foundation Exploited CISA KEV

High [CVE-2026-34197] Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Authenticated users could perform RCE via Jolokia MBeans

This high-severity Apache Software Foundation advisory covers CVE-2026-34197 affecting Apache ActiveMQ, Apache ActiveMQ Broker, Apache ActiveMQ Classic.

CVE-2026-34197 Published Apr 7, 2026Updated by vendor Aug 17, 2026
CVE-2026-34197
Affected products & platforms
Apache Software FoundationMessagingActiveMQ
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Summary

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 All: before 5.19.4, from 6.0.0 before 6.2.3; Apache ActiveMQ: before 5.19.4, from 6.0.0 before 6.2.3.

Users are recommended to upgrade to version 5.19.4 or 6.2.3, which fixes the issue

CISA Known Exploited Vulnerability

Listed:
Apr 16, 2026 · federal remediation due Apr 30, 2026
Required action:
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Ransomware use:
Unknown

KEV is a prioritization signal from CISA — remediation detail still comes from the vendor advisory.

Affected versions
  • Apache ActiveMQ Broker before 5.19.4
  • Apache ActiveMQ Broker 6.0.0 before 6.2.3
  • Apache ActiveMQ All before 5.19.4
  • Apache ActiveMQ All 6.0.0 before 6.2.3
  • Apache ActiveMQ before 5.19.4
  • Apache ActiveMQ 6.0.0 before 6.2.3

Official advisory · high-confidence parse· fetched 1 month ago·verify at source

Fixed versions
  • 5.19.4
  • 6.2.3

Official advisory · high-confidence parse· fetched 1 month ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Users are recommended to upgrade to version 5.19.4 or 6.2.3, which fixes the issue

Official advisory · high-confidence parse· fetched 1 month ago·verify at source

Discussion(0)

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