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CVE-2026-49363 An unauthenticated remote attacker connecting with the CORE protocol can discover cluster node details by sending a…

Description

An unauthenticated remote attacker connecting with the CORE protocol can discover cluster node details by sending a SUBSCRIBE_TOPOLOGY request prior to authentication. 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 and versions

Product Affected versions Fixed in
Apache Artemis 2.50 2.50.0 → 2.56.0 No fix stated
Apache ActiveMQ Artemis 1.0 1.0.0 → 2.44.0 No fix stated

References

Timeline

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The 9 CVEs of Apache Artemis →
CVE-2026-49362 An unauthenticated remote attacker can create arbitrary durable queues via the CORE protocol, leading to unauthorized… Not rated CVE-2026-49364 An unauthenticated network-adjacent attacker can leverage discovery to capture cluster administrative credentials during… Not rated CVE-2026-57822 When the broker is processing message-based management requests, sent by an authenticated messaging client that is… Not rated CVE-2026-57967 An unauthenticated remote attacker can craft a CORE protocol SESSION_REATTACH packet to steal an existing session and… Not rated
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