Description
Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All. Following the fix for CVE-2026-49270 an unauthenticated attacker can now cause broker OOM by sending an repeated BrokerInfo commands without sending a ConnectionInfo, until the broker will crash with OOM. This issue affects Apache ActiveMQ Broker: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ All: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7. Users are recommended to upgrade to version 6.2.7, which fixes the issue.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected products
- apache / ActiveMQ5.19.7 – 5.19.7
- apache / ActiveMQ6.2.6 – 6.2.6
- apache / activemq_broker6.2.6 – 6.2.6
- apache / activemq_broker5.19.7 – 5.19.7
- Apache Software Foundation / Apache ActiveMQ5.19.7 – 5.19.8
- Apache Software Foundation / Apache ActiveMQ6.2.6 – 6.2.7
- Apache Software Foundation / Apache ActiveMQ All6.2.6 – 6.2.7
- Apache Software Foundation / Apache ActiveMQ All5.19.7 – 5.19.8
- Apache Software Foundation / Apache ActiveMQ Broker5.19.7 – 5.19.8
- Apache Software Foundation / Apache ActiveMQ Broker6.2.6 – 6.2.7
References
Updated 16m ago · 8 sources