CVE-2026-67593: Apache Artemis, Apache ActiveMQ Artemis: Pre-authentication Openwire protocol handling can result in queue deletion

[Clebert Suconic <clebertsuconic () apache org>]

Severity: important 

Affected versions:

- Apache Artemis (org.apache.artemis:artemis-openwire-protocol) 2.50.0 through 2.56.0
- Apache Artemis (org.apache.artemis:artemis-jakarta-openwire-protocol) 2.50.0 through 2.56.0
- Apache ActiveMQ Artemis (org.apache.activemq:artemis-openwire-protocol) 1.0.0 through 2.44.0
- Apache ActiveMQ Artemis (org.apache.activemq:artemis-jakarta-openwire-protocol) 2.32.0 through 2.44.0

Description:

A remote attacker can craft an Openwire RemoveSubscriptionInfo command to cause the deletion of a queue on the Artemis 
broker before the connection authentication and authorization stage or at any time thereafter. 



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:

Daniel Birtwhistle (finder)
krsecurity(kongr) (reporter)
Dilrevx, NSSL, SJTU (reporter)

References:

https://artemis.apache.org
https://www.cve.org/CVERecord?id=CVE-2026-67593