Improper Input Validation Affecting apache-activemq-6.2 package, versions <6.2.8-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
4.78% (91st percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-APACHEACTIVEMQ62-18311717
  • published26 Jul 2026
  • disclosed24 Apr 2026

Introduced: 24 Apr 2026

CVE-2026-40466  (opens in a new tab)
CWE-20  (opens in a new tab)
CWE-94  (opens in a new tab)

How to fix?

Upgrade Minimos:latest apache-activemq-6.2 to version 6.2.8-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream apache-activemq-6.2 package and not the apache-activemq-6.2 package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1