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CVE-2026-40466GHSA-W3W2-MPP5-92GMBIT-ACTIVEMQ-2026-40466

Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Possible bypass of CVE-2026-34197 via HTTP discovery second-stage URI

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.19.6, 6.2.5
1 Nuclei template
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

Improper Input Validation, Improper Control of Generation of Code ('Code Injection') vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ. An authenticated attacker may bypass the fix in CVE-2026-34197 by adding a connector using an HTTP Discovery transport via BrokerView.addNetworkConnector or BrokerView.addConnector through Jolokia if the activemq-http module is on the classpath. A malicious HTTP endpoint can return a VM transport through the HTTP URI which will bypass the validation added in CVE-2026-34197. The attacker can then use 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 5.19.6, from 6.0.0 before 6.2.5; Apache ActiveMQ All: before 5.19.6, from 6.0.0 before 6.2.5; Apache ActiveMQ: before 5.19.6, from 6.0.0 before 6.2.5. Users are recommended to upgrade to version 5.19.6 or 6.2.5, which fixes the issue.

Timeline

  1. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  2. CVE published
  3. Record last updated

Affected versions

  • org.apache.activemq:activemq-broker

    fixed in 5.19.6; From 6.0.0 · fixed in 6.2.5

  • org.apache.activemq:activemq-all

    fixed in 5.19.6; From 6.0.0 · fixed in 6.2.5

  • org.apache.activemq:apache-activemq

    fixed in 5.19.6; From 6.0.0 · fixed in 6.2.5

  • org.apache.activemq:apache-activemqMaven

    fixed in 5.19.6

  • org.apache.activemq:activemq-allMaven

    fixed in 5.19.6

  • org.apache.activemq:activemq-brokerMaven

    fixed in 5.19.6

  • org.apache.activemq:apache-activemqMaven

    From 6.0.0 · fixed in 6.2.5

  • org.apache.activemq:activemq-allMaven

    From 6.0.0 · fixed in 6.2.5

  • org.apache.activemq:activemq-brokerMaven

    From 6.0.0 · fixed in 6.2.5

References 2

activemq.apache.org

GitHub · projectdiscovery/nuclei-templates