BIT-ACTIVEMQ-2026-53917 Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker: Unbounded memory allocation in OpenWire property unmarshalling

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...

CVE-2026-53917

CVE-2026-53917 describes an unbounded memory allocation vulnerability in OpenWire property unmarshalling in Apache ActiveMQ and related builds. An authenticated user can send a crafted OpenWire Message with a very large encoded size value for a message property map, causing OpenWire maps to be un...