CVE-2026-74761: Apache ActiveMQ

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• Apache ActiveMQ: before 5.19.11 (fixed in 5.19.11); from 6.0.0, before 6.3.2 (fixed in 6.3.2)
• Apache ActiveMQ All: before 5.19.11 (fixed in 5.19.11); from 6.0.0, before 6.3.2 (fixed in 6.3.2)
• Apache ActiveMQ Broker: before 5.19.11 (fixed in 5.19.11); from 6.2.0, before 6.3.2 (fixed in 6.3.2)

Published 2026-09-09. Last modified 2026-09-18.