Vulnerability · Published Sep 10, 2026 · Assigned by apache
CVE-2026-57822Apache Artemis, Apache ActiveMQ Artemis: Message-based management parameter deserialization may lead to denial of service
Medium 6.5
In plain English
A medium-severity unsafe deserialization in Apache ActiveMQ Artemis from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Artemis | 2.50.0 – through 2.56.0 |
| Apache Software Foundation | Apache ActiveMQ Artemis | 1.3.0 – through 2.44.0 |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H