Apache ActiveMQ, ActiveMQ Broker: Repeated rejected temporary destination consumer requests can lead to broker OOM

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-108949
StatePUBLISHED
Assignerapache
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-04 10:17:24 UTC
Updated2026-11-04 10:17:24 UTC
DescriptionDenial of Service via OOM vulnerability in Apache ActiveMQ, ActiveMQ Broker. An authenticated OpenWire client that sends a ConsumerInfo for a temporary queue/topic owned by another connection is rejected with InvalidDestinationException, but the rejected Subscription is left behind in the region's subscriptions map. Repeating the request leaks broker heap until OOM because the broker does not clean up the rejected subscriptions in the map. This issue affects Apache ActiveMQ: from 6.0.0 before 6.3.3, before 5.19.12; ActiveMQ Broker: from 6.0.0 before 6.3.3, before 5.19.12. Users are recommended to upgrade to version 6.4.0, 6.3.3, or 5.19.12, which fixes the issue.

Risk And Classification

Problem Types: CWE-401 | CWE-401 CWE-401 Missing release of memory after effective lifetime

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apache Software Foundation Apache ActiveMQ affected 6.0.0 6.3.3 semver Not specified
CNA Apache Software Foundation Apache ActiveMQ affected 5.19.12 semver Not specified
CNA Apache Software Foundation ActiveMQ Broker affected 6.0.0 6.3.3 semver Not specified
CNA Apache Software Foundation ActiveMQ Broker affected 5.19.12 semver Not specified

References

ReferenceSourceLinkTags
lists.apache.org/thread/2l1jbc8j88w1n9bd44vm9bjtj9t3o80n [email protected] lists.apache.org
www.openwall.com/lists/oss-security/2026/11/03/18 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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