GHSA-f77w-px59-cqf5

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GHSA-f77w-px59-cqf5

Summary: Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker have Memory Allocation with Excessive Size Value vulnerability

Details: 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: https://nvd.nist.gov/vuln/detail/CVE-2026-53917, https://github.com/apache/activemq/pull/2136, https://github.com/apache/activemq/commit/78bb8dcdc32e80c8b8813b57f89147572d16a2b9, https://github.com/apache/activemq/commit/b20e61c7ef736a04ad07a934ea8de628550c6cf2, https://github.com/apache/activemq/commit/ecfd1336fa3f3f6116a78f0ab71d1b2f90bc717f, https://github.com/apache/activemq, https://github.com/apache/activemq/releases/tag/activemq-5.19.8, https://github.com/apache/activemq/releases/tag/activemq-6.2.7, https://lists.apache.org/thread/grrd1mwgkgblqjbwkkq6dvmdxd9ov2dx, http://www.openwall.com/lists/oss-security/2026/06/29/14