Vulnerability · Published Sep 10, 2026 · Assigned by apache
CVE-2026-49364Apache Artemis, Apache Artemis, Apache ActiveMQ Artemis, Apache ActiveMQ Artemis: Pre-Authentication Cluster Credential Exposure to Discovered Peers
Critical 9.1
In plain English
A critical-severity missing authentication in Apache ActiveMQ Artemis from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Artemis | 2.50.0 – through 2.56.0 |
| Apache Software Foundation | Apache Artemis | 2.50.0 – through 2.56.0 |
| Apache Software Foundation | Apache ActiveMQ Artemis | 1.0.0 – through 2.44.0 |
| Apache Software Foundation | Apache ActiveMQ Artemis | 1.0.0 – through 2.44.0 |
Weakness: CWE-306 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N