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CRITICAL

CVE-2026-49364

CVSS v3

9.1

CRITICAL

EPSS Score

0.6 %

exploit probability, as of 2026-09-28

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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.

Technical details

Published
2026-09-10
Last Modified
2026-09-10

Frequently asked questions

What is CVE-2026-49364?

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.

Is CVE-2026-49364 actively exploited?

Active exploitation of CVE-2026-49364 has not been confirmed. Its EPSS score was 0.6% on 2026-09-28, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-49364?

CVE-2026-49364 has a CVSS v3 base score of 9.1 (CRITICAL severity).

Is CVE-2026-49364 affecting your environment?

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