CVE-2026-57822: Apache Artemis

Medium severity, CVSS 6.5. EPSS: 0.7% chance of exploitation in the next 30 days.

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.

Affected products

• Apache Artemis: from 1.3.0, before 2.44.0 (fixed in 2.44.0); from 2.50.0, before 2.57.0 (fixed in 2.57.0)

Published 2026-09-10. Last modified 2026-09-16.