PT-2026-89272 · Apache · Apache Activemq Artemis+1

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CVE-2026-57967

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Published

2026-09-10

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Updated

2026-09-10

CVSS v3.1

9.8

Critical

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.

Fix

Missing Authentication

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Weakness Enumeration

Related Identifiers

CVE-2026-57967

Affected Products

Apache Activemq Artemis
Apache Artemis