An unauthenticated network-adjacent attacker can leverage discovery to capture cluster administrative credentials during the initial cluster connection handshake. This issue affects Apache Artemis: …

Critical CVSS 9.1

CVECVE-2026-49364

First seen2026-09-16 02:15 UTC

Disclosed2026-09-10 05:17 UTC

Last updated2026-09-16 02:15 UTC

Channel statusauto

Summary

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.

In-depth triage

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Affected products

Sources

NVD DATABASE

Original Links

https://lists.apache.org/thread/4qbgcz3k38q30bfbf7hphtomrdc8l8n8 Mailing List
http://www.openwall.com/lists/oss-security/2026/09/10/3 Mailing List

Timeline

2026-09-16 nvd_ingest NVD