Severity: important Affected versions:
- Apache Artemis (org.apache.artemis:artemis-core-client) 2.50.0 through 2.56.0 - Apache ActiveMQ Artemis (org.apache.activemq:artemis-core-client) 1.3.0 through 2.44.0 Description: When the broker is processing message-based management requests, sent by an authenticated messaging client that is authorized with MANAGE permission to perform management-via-messaging, the parameter processing can trigger Java deserialization of certain method parameters that the broker will not utilise. The permitted types allow to craft a payload causing excessive computation and pinning the processing thread, leading to denial of service. This issue affects Apache Artemis: from 2.50.0 through 2.56.0; Apache ActiveMQ Artemis: from 1.3.0 through 2.44.0. Users are recommended to upgrade to version 2.57.0, which fixes the issue. Credit: Clebert Suconic (finder) Mike Read (reporter) References: https://artemis.apache.org https://www.cve.org/CVERecord?id=CVE-2026-57822
