CVE-2026-74761
High
Description
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Apache Activemq
PublishedSep 9, 2026
First seenSep 9, 2026
Weakness typeCWE-20Improper input validation
How to fix
Update
- apache activemq5.19.11, 6.3.2 or later
- apache activemq_all5.19.11, 6.3.2 or later
- apache activemq_broker5.19.11, 6.3.2 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apache activemq | v < 5.19.11, 6.0.0 ≤ v < 6.3.2 | 5.19.11, 6.3.2 |
| apache activemq_all | v < 5.19.11, 6.0.0 ≤ v < 6.3.2 | 5.19.11, 6.3.2 |
| apache activemq_broker | v < 5.19.11, 6.2.0 ≤ v < 6.3.2 | 5.19.11, 6.3.2 |
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