Input validation error in ActiveMQ - CVE-2026-74761
Published: September 10, 2026
Vulnerability identifier: #VU148861
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-74761
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to remove durable topic subscriptions.
The vulnerability exists due to improper input validation in TopicRegion when removing a durable topic subscription. A remote user can submit a removal request with a spoofed clientId to remove durable topic subscriptions.
The issue affects all platforms.
Affected software
ActiveMQ
How to mitigate CVE-2026-74761
Install security update from vendor's website.
ActiveMQ - addressed in versions 5.19.11, 6.3.2