CVE-2026-50750
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.
How to fix
- org.apache.activemq:activemq-broker5.19.8, 6.2.7 or later
- org.apache.activemq:apache-activemq5.19.8, 6.2.7 or later
- org.apache.activemq:activemq-all5.19.8, 6.2.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apache activemq | 5.19.7, 6.2.6 | — |
| apache activemq_broker | 5.19.7, 6.2.6 | — |
| org.apache.activemq:activemq-brokerMaven | 5.19.7, 6.2.6 | 5.19.8, 6.2.7 |
| org.apache.activemq:apache-activemqMaven | 5.19.7, 6.2.6 | 5.19.8, 6.2.7 |
| org.apache.activemq:activemq-allMaven | 5.19.7, 6.2.6 | 5.19.8, 6.2.7 |
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