CVE-2026-57967criticalCWE-306

CVE-2026-57967: critical vulnerability in Apache Artemis

Apache Artemis, Apache ActiveMQ Artemis: Missing authentication on CORE protocol session reattachment

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48Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 9.8epss 1.5%
from disclosure to weapon26 days
Published on NVDSep 10
1st PoC+26d
An unauthenticated remote attacker can craft a CORE protocol SESSION_REATTACH packet to steal an existing session and assume ongoing execution of the previously authenticated session. 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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Apache Software Foundation · Apache ActiveMQ ArtemisApache Software Foundation · Apache Artemis
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Apache Artemis

In the same product, most dangerous first.

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