CVE-2026-49363
An unauthenticated remote attacker connecting with the CORE protocol can discover cluster node details by sending a SUBSCRIBE_TOPOLOGY request prior to authentication. 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.
- Score
- CVSS 3.1 7.5 High
- Status
- Analyzed - security@apache.org
- Published
- 2026-09-10
- Last modified
- 2026-09-10
- Weaknesses
- CWE-306
Affected products
- Artemis (Apache)
- Apache Activemq Artemis (Apache Software Foundation)
- Apache Artemis (Apache Software Foundation)
References
- https://lists.apache.org/thread/syjch88zw6pfdoso9vs46m23xkgxjbxo
- http://www.openwall.com/lists/oss-security/2026/09/10/2
