CVE-2026-50750: Apache ActiveMQ

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

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.

Affected products

• Apache ActiveMQ: version 5.19.7 only; version 6.2.6 only
• Apache ActiveMQ Broker: version 5.19.7 only; version 6.2.6 only

Published 2026-06-30. Last modified 2026-07-02.