Bug 2494842 (CVE-2026-53917) - CVE-2026-53917 activemq: activemq-all: activemq-client: activemq-broker: Apache ActiveMQ: Denial of Service via crafted OpenWire Message
Summary: CVE-2026-53917 activemq: activemq-all: activemq-client: activemq-broker: Apac...
Keywords:
Status: NEW
Alias: CVE-2026-53917
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
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Depends On: 2495077 2495078
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-30 11:02 UTC by OSIDB Bzimport
Modified: 2026-06-30 17:45 UTC (History)
56 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-06-30 11:02:08 UTC 
Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker.

An authenticated user can cause a broker DoS by sending a crafted OpenWire Message with a large encoded size value for the map. OpenWire message property maps are unmarshaled without size validation which can trigger OOM and crash the broker.
This issue affects Apache ActiveMQ: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ All: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ Client: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ Broker: before 5.19.8, from 6.0.0 before 6.2.7.

Users are recommended to upgrade to version 6.2.7 or 5.19.8, which fixes the issue.
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