CVE-2026-57967
Apache Artemis, Apache ActiveMQ Artemis: Missing authentication on CORE protocol session reattachment
CVE-2026-57967: Apache Artemis, Apache ActiveMQ Artemis: Missing authentication on CORE protocol session reattachment. Not in the CISA KEV catalog.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
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CVE-2026-57967 key facts
- CISA KEV
- Not listed (catalog checked )
- Highest advisory severity
- Critical
- CVSS base score
- 9.8 (Apache), 7.4 (Red Hat)
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N(Red Hat)
- Weakness
- CWE-306
- Fixed releases
- Apache: 2.57.0
- Red Hat: 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 and 43 more in the advisory
- VulniPulse record
- Published · Updated
Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-57967; bulletin-wide values are not repeated here.
Is CVE-2026-57967 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2026-57967 is not in the CISA KEV catalog (checked ) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2026-57967?
Upgrade to a fixed release named by the vendor:
- Apache: 2.57.0
- Red Hat: 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
- Users are recommended to upgrade to version 2.57.0, which fixes the issue. (Apache)
Vendor advisory comparison
Apache
1 advisory- Advisory severityCritical9.8
Critical [CVE-2026-57967] Apache Artemis, Apache ActiveMQ Artemis: Missing authentication on CORE protocol session reattachment
CVE-2026-57967Source published Source updated
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 in this advisory
- Apache Artemis
- Source-reported affected versions
- Apache Artemis 2.50.0 through 2.56.0
- Apache ActiveMQ Artemis 1.0.0 through 2.44.0
- Source-reported fixed versions
- 2.57.0
- Mitigation guidance
- Users are recommended to upgrade to version 2.57.0, which fixes the issue.
Red Hat
1 advisory- Advisory severityHigh7.4
High [CVE-2026-57967] Apache Artemis — session hijack via missing authentication
CVE-2026-57967Source published Source updated
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…
- Affected products in this 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
6 more entries in the full advisory.
- Source-reported affected versions
- 2.50.0
- 2.56.0
- 1.0.0
- 2.44.0
- Source-reported fixed versions
- 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
45 more entries in the full advisory.
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
More Apache advisories
- CVE-2026-49362Sep 10, 2026Apache Artemis: unauthenticated remote attacker can create arbitrary durable queues
- CVE-2026-49363Sep 10, 2026Apache Artemis: unauthenticated remote attacker connecting with the CORE protocol can
- CVE-2026-49364Sep 10, 2026Apache Artemis: unauthenticated network-adjacent attacker can leverage discovery
- CVE-2026-57822Sep 10, 2026Apache Artemis: When the broker is processing message-based management requests, sent
- CVE-2026-67593Sep 10, 2026Apache Artemis: remote attacker can craft an Openwire RemoveSubscriptionInfo command
- CVE-2026-75880Sep 10, 2026Apache Artemis, Apache ActiveMQ Artemis: Message selector wildcard handling could lead
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