Paper/Archive/CVE-2026-49364

CVE-2026-49364

Apache Software Foundation Apache Artemis — Apache Artemis, Apache Artemis, Apache ActiveMQ Artemis, Apache ActiveMQ Artemis: Pre-Authentication Cluster Credential Exposure to Discovered Peers

EPSS 0.6%CVSS 9.1

critical.is priorityof 100

CVSS 9.1 (ADP)9.1 / 10 × 3027.3 Not in CISA KEV+300.0 EPSS percentile 47.0.470 × 209.4 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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

ProductAffectedFixed inSource

Apache Artemis2.50.0 – 2.56.0–CNA

Apache ActiveMQ Artemis1.0.0 – 2.44.0–CNA

Scores by source

CISA ADP9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisorylists.apache.org/thread/4qbgcz3k38q30bfbf7hphtomrdc8l8n8 refopenwall.com/lists/oss-security/2026/09/10/3