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CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2026-57967

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

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Apache Software Foundation Apache Artemis

Default version status: unaffected

  • 2.50.0 to ≤ 2.56.0affected
pkg:maven/org.apache.artemis/artemis-server

Apache Software Foundation Apache ActiveMQ Artemis

Default version status: unaffected

  • 1.0.0 to ≤ 2.44.0affected
pkg:maven/org.apache.activemq/artemis-server

References