CVE-2019-4227: IBM Mq

High severity, CVSS 7.3. EPSS: 1.1% chance of exploitation in the next 30 days.

IBM MQ 8.0.0.4 - 8.0.0.12, 9.0.0.0 - 9.0.0.6, 9.1.0.0 - 9.1.0.2, and 9.1.0 - 9.1.2 AMQP Listeners could allow an unauthorized user to conduct a session fixation attack due to clients not being disconnected as they should. IBM X-Force ID: 159352.

Affected products

• IBM Mq: from 8.0.0.4, up to and including 8.0.0.12; from 9.0.0.0, up to and including 9.0.0.6; from 9.1.0, up to and including 9.1.2; from 9.1.0.0, up to and including 9.1.0.2

Published 2019-10-04. Last modified 2026-06-17.