High [CVE-2026-57967] Apache Artemis — session hijack via missing authentication
This high-severity Red Hat Linux advisory covers CVE-2026-57967 affecting Red Hat AMQ Broker 7.13.6, Red Hat AMQ Broker 7.14.1, Red Hat JBoss Enterprise Application Platform 7.4.25.
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Summary
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. in Apache Artemis, the REATTACH_SESSION handler performs zero authentication — it looks up the session by name only and calls transferConnection() unconditionally, migrating the authenticated session to the attacker's connection.
The hijacked cluster-bridge session inherits full broker-management authority (message injection, topology manipulation, journal access) Red Hat severity: Important — CVSS 7.4 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N). Weakness: CWE-306.
Affected products named by the advisory: Red Hat AMQ Broker 7.13.6; Red Hat AMQ Broker 7.14.1; Red Hat JBoss Enterprise Application Platform 7.4.25; Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7; and 6 more.
- 2.50.0
- 2.56.0
- 1.0.0
- 2.44.0
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
- 2.57.0
- artemis-server
- org.apache.activemq/artemis-server:2.16.0.redhat-00057
- eap7-activemq-artemis-0:2.16.0-23.redhat_00058.1.el7eap
- eap7-jackson-annotations-0:2.18.9-1.redhat_00003.1.el7eap
- eap7-jackson-core-0:2.18.9-1.redhat_00003.1.el7eap
- eap7-jackson-databind-0:2.18.9-1.redhat_00003.1.el7eap
- eap7-jackson-jaxrs-providers-0:2.18.9-1.redhat_00003.1.el7eap
- eap7-jackson-modules-base-0:2.18.9-1.redhat_00003.1.el7eap
- eap7-jackson-modules-java8-0:2.18.9-1.redhat_00003.1.el7eap
- eap7-wildfly-0:7.4.25-6.GA_redhat_00005.1.el7eap
- eap7-activemq-artemis-0:2.16.0-23.redhat_00058.1.el8eap
- eap7-jackson-annotations-0:2.18.9-1.redhat_00003.1.el8eap
- eap7-jackson-core-0:2.18.9-1.redhat_00003.1.el8eap
- eap7-jackson-databind-0:2.18.9-1.redhat_00003.1.el8eap
- eap7-jackson-jaxrs-providers-0:2.18.9-1.redhat_00003.1.el8eap
- eap7-jackson-modules-base-0:2.18.9-1.redhat_00003.1.el8eap
- eap7-jackson-modules-java8-0:2.18.9-1.redhat_00003.1.el8eap
- eap7-wildfly-0:7.4.25-6.GA_redhat_00005.1.el8eap
- eap7-activemq-artemis-0:2.16.0-23.redhat_00058.1.el9eap
- eap7-jackson-annotations-0:2.18.9-1.redhat_00003.1.el9eap
- eap7-jackson-core-0:2.18.9-1.redhat_00003.1.el9eap
- eap7-jackson-databind-0:2.18.9-1.redhat_00003.1.el9eap
- eap7-jackson-jaxrs-providers-0:2.18.9-1.redhat_00003.1.el9eap
- eap7-jackson-modules-base-0:2.18.9-1.redhat_00003.1.el9eap
- eap7-jackson-modules-java8-0:2.18.9-1.redhat_00003.1.el9eap
- eap7-wildfly-0:7.4.25-6.GA_redhat_00005.1.el9eap
- eap8-activemq-artemis-0:2.40.0-8.redhat_00024.1.el10eap
- eap8-apache-cxf-0:4.1.7-1.SP1_redhat_00001.1.el10eap
- eap8-artemis-wildfly-integration-0:2.0.5-1.Final_redhat_00001.1.el10eap
- eap8-bouncycastle-0:1.85.0-1.redhat_00001.1.el10eap
- eap8-cryptacular-0:1.2.7-1.redhat_00002.1.el10eap
- eap8-eap-product-conf-parent-0:801.8.0-1.GA_redhat_00001.1.el10eap
- eap8-hibernate-0:6.6.54-1.Final_redhat_00001.1.el10eap
- eap8-httpcomponents-asyncclient-0:4.1.5-5.redhat_00008.1.el10eap
- eap8-ironjacamar-0:3.0.22-1.Final_redhat_00001.1.el10eap
- eap8-jackson-annotations-0:2.18.9-1.redhat_00003.1.el10eap
- eap8-jackson-core-0:2.18.9-1.redhat_00003.1.el10eap
- eap8-jackson-databind-0:2.18.9-1.redhat_00003.1.el10eap
- eap8-jackson-dataformats-text-0:2.18.9-1.redhat_00003.1.el10eap
- eap8-jackson-jaxrs-providers-0:2.18.9-1.redhat_00003.1.el10eap
- RHSA-2026:66545
- RHSA-2026:66488
- RHSA-2026:67603
- RHSA-2026:67604
- RHSA-2026:70277
- RHSA-2026:70230
- RHSA-2026:70228
- RHSA-2026:70229
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
Mitigation
Upgrade to a fixed release: 2.57.0, artemis-server, org.apache.activemq/artemis-server:2.16.0.redhat-00057, eap7-activemq-artemis-0:2.16.0-23.redhat_00058.1.el7eap, eap7-jackson-annotations-0:2.18.9-1.redhat_00003.1.el7eap, eap7-jackson-core-0:2.18.9-1.redhat_00003.1.el7eap. That is the remediation for this advisory.
The vendor advisory may list interim mitigations or workarounds not captured here. Review it before change work.
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
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