Description
An authenticated client could attach a consumer with a selector containing crafted wildcard usage that results in excessive evaluation during message delivery attempts, occupying a shared broker thread and leading to denial of service.
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 this issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache Artemis | 2.50.0 – ≤ 2.56.0 | — |
| Apache Software Foundation | Apache ActiveMQ Artemis | 1.0.0 – ≤ 2.44.0 | — |
Advisories 1
- WID-SEC-2026-3289 Apache ActiveMQ Artemis: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2026
References
- https://lists.apache.org/thread/db34g9qoxd8p08086cr95683fkb8wm5r vendor-advisory