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Posted to users@artemis.apache.org by Clebert Suconic <cl...@apache.org> on 2026/09/09 20:24:17 UTC

CVE-2026-49364: Apache Artemis, Apache ActiveMQ Artemis: Pre-Authentication Cluster Credential Exposure to Discovered Peers

Severity: important 

Affected versions:

- Apache Artemis (org.apache.artemis:artemis-core-client) 2.50.0 through 2.56.0
- Apache Artemis (org.apache.artemis:artemis-server) 2.50.0 through 2.56.0
- Apache ActiveMQ Artemis (org.apache.activemq:artemis-core-client) 1.0.0 through 2.44.0
- Apache ActiveMQ Artemis (org.apache.activemq:artemis-server) 1.0.0 through 2.44.0

Description:

An unauthenticated network-adjacent attacker can leverage discovery to capture cluster administrative credentials during the initial cluster connection handshake.

This issue affects Apache Artemis: from 2.50.0 through 2.56.0; Apache ActiveMQ Artemis: from 1.0.0 through 2.44.0.



Users are recommended to upgrade to version 2.57.0, which fixes the issue.

Credit:

Domenico Francesco Bruscino (finder)

References:

https://artemis.apache.org
https://www.cve.org/CVERecord?id=CVE-2026-49364


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