CVE-2026-74761 is a vulnerability in Apache ActiveMQ
Published on September 9, 2026
Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Spoofing of RemoveSubscription clientId
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.
Weakness Type
Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Products Associated with CVE-2026-74761
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Affected Versions
Apache Software Foundation Apache ActiveMQ Broker:- Version 6.0.0 and below 6.3.2 is affected.
- Before 5.19.11 is affected.
- Version 6.0.0 and below 6.3.2 is affected.
- Before 5.19.11 is affected.
- Version 6.0.0 and below 6.3.2 is affected.
- Before 5.19.11 is affected.