CVE-2026-49364CWE-306

CVE-2026-49364

Critical · published September 10, 2026

CVSS v3.1
9.1
EPSS
1%
Percentile
46.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00566 · 46.3th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-09-10T09:17Z
Affected products (2)
ProductVersionsFixed in
apache/artemis≥ 1.0.0, < 2.44.02.44.0
apache/artemis≥ 2.50.0, < 2.57.02.57.0
References (2)
https://lists.apache.org/thread/4qbgcz3k38q30bfbf7hphtomrdc8l8n8 · [email protected]http://www.openwall.com/lists/oss-security/2026/09/10/3 · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 11 SEP 03:18Z
    EPSS moved — → 0%
    epss
  • 10 SEP 04:49Z
    Apache Artemis, Apache Artemis, Apache ActiveMQ Artemis, Apache ActiveMQ Artemis: Pre-Authentication Cluster Credential Exposure to Discovered Peers
    cvelistv5