Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker have Memory Allocation with Excessive Size Value vulnerability
GHSA-f77w-px59-cqf5 · BIT-activemq-2026-53917 · CVE-2026-53917
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Description
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.
References
- ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-53917
- WEB https://github.com/apache/activemq/pull/2136
- WEB https://github.com/apache/activemq/commit/78bb8dcdc32e80c8b8813b57f89147572d16a2b9
- WEB https://github.com/apache/activemq/commit/b20e61c7ef736a04ad07a934ea8de628550c6cf2
- WEB https://github.com/apache/activemq/commit/ecfd1336fa3f3f6116a78f0ab71d1b2f90bc717f
- PACKAGE https://github.com/apache/activemq
- WEB https://github.com/apache/activemq/releases/tag/activemq-5.19.8
- WEB https://github.com/apache/activemq/releases/tag/activemq-6.2.7
- WEB https://lists.apache.org/thread/grrd1mwgkgblqjbwkkq6dvmdxd9ov2dx
- WEB http://www.openwall.com/lists/oss-security/2026/06/29/14
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