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CVE-2026-33227GHSA-H2H4-5M64-M273BIT-ACTIVEMQ-2026-33227

Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ Web, Apache ActiveMQ: Improper Limitation of a Pathname to a Restricted Classpath Directory

Published
Last modified
published
Not listed in CISA KEV
Low (apache)
Fix
Fixed in 5.19.3, 6.2.2
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

Improper validation and restriction of a classpath path name vulnerability in Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ Web, Apache ActiveMQ. In two instances (when creating a Stomp consumer and also browsing messages in the Web console) an authenticated user provided "key" value could be constructed to traverse the classpath due to path concatenation. As a result, the application is exposed to a classpath path resource loading vulnerability that could potentially be chained together with another attack to lead to exploit. This issue affects Apache ActiveMQ Client: before 5.19.3, from 6.0.0 before 6.2.2; Apache ActiveMQ Broker: before 5.19.3, from 6.0.0 before 6.2.2; Apache ActiveMQ All: before 5.19.3, from 6.0.0 before 6.2.2; Apache ActiveMQ Web: before 5.19.3, from 6.0.0 before 6.2.2; Apache ActiveMQ: before 5.19.3, from 6.0.0 before 6.2.2. Users are recommended to upgrade to version 5.19.4 or 6.2.3, which fixes the issue. Note: 5.19.3 and 6.2.2 also fix this issue, but that is limited to non-Windows environments due to a path separator resolution bug fixed in 5.19.4 and 6.2.3.

Timeline

  1. CVE published
  2. CISA SSVC assessment

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

  3. Record last updated

Affected versions

  • org.apache.activemq:activemq-client

    fixed in 5.19.3; From 6.0.0 · fixed in 6.2.2

  • org.apache.activemq:activemq-broker

    fixed in 5.19.3; From 6.0.0 · fixed in 6.2.2

  • org.apache.activemq:activemq-all

    fixed in 5.19.3; From 6.0.0 · fixed in 6.2.2

  • org.apache.activemq:activemq-web

    fixed in 5.19.3; From 6.0.0 · fixed in 6.2.2

  • org.apache.activemq:apache-activemq

    fixed in 5.19.3; From 6.0.0 · fixed in 6.2.2

  • org.apache.activemq:activemq-clientMaven

    fixed in 5.19.3

  • org.apache.activemq:activemq-clientMaven

    From 6.0.0 · fixed in 6.2.2

  • org.apache.activemq:activemq-brokerMaven

    fixed in 5.19.3

  • org.apache.activemq:activemq-brokerMaven

    From 6.0.0 · fixed in 6.2.2

  • org.apache.activemq:activemq-allMaven

    fixed in 5.19.3

  • org.apache.activemq:activemq-allMaven

    From 6.0.0 · fixed in 6.2.2

  • org.apache.activemq:activemq-webMaven

    fixed in 5.19.3

  • org.apache.activemq:activemq-webMaven

    From 6.0.0 · fixed in 6.2.2

References 1

activemq.apache.org