High · published September 9, 2026
Improper input validation in TopicRegion in Apache ActiveMQ, Apache ActiveMQ Broker, and Apache ActiveMQ All on all platforms.
An authenticated client can spoof clientId when removing a durable topic subscription.
This issue affects Apache ActiveMQ Broker: before 5.19.11, from 6.0.0 before 6.3.2; Apache ActiveMQ All: before 5.19.11, from 6.0.0 before 6.3.2; Apache ActiveMQ: before 5.19.11, from 6.0.0 before 6.3.2.
Users are recommended to upgrade to version 6.3.2 or 5.19.11 which fixes the issue.
| Product | Versions | Fixed in |
|---|---|---|
| apache/activemq | < 5.19.11 | 5.19.11 |
| apache/activemq | ≥ 6.0.0, < 6.3.2 | 6.3.2 |
| apache/activemq_all | < 5.19.11 | 5.19.11 |
| apache/activemq_all | ≥ 6.0.0, < 6.3.2 | 6.3.2 |
| apache/activemq_broker | < 5.19.11 | 5.19.11 |
| apache/activemq_broker | ≥ 6.2.0, < 6.3.2 | 6.3.2 |