CVE-2025-27391: Apache ActiveMQ Artemis: Passwords leaking from broker properties in the debug log

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-04-09 · updated 2026-06-17
Weakness: CWE-532

Description

Insertion of Sensitive Information into Log File vulnerability in Apache ActiveMQ Artemis. All the values of the broker properties are logged when the org.apache.activemq.artemis.core.config.impl.ConfigurationImpl logger has the debug level enabled. This issue affects Apache ActiveMQ Artemis: from 1.5.1 before 2.40.0. It can be mitigated by restricting log access to only trusted users. Users are recommended to upgrade to version 2.40.0, which fixes the issue.

Affected products

Apache Software Foundation Apache ActiveMQ Artemis: from 1.5.1 before 2.40.0 — fixed in 2.40.0

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache ActiveMQ Artemis 2.40.0. Check the vendor advisory for mitigations.

References

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