CVE-2020-4319: IBM Mq Appliance

Medium severity, CVSS 4.3. EPSS: 0.7% chance of exploitation in the next 30 days.

IBM MQ, IBM MQ Appliance, and IBM MQ for HPE NonStop 8.0, 9.1 LTS, and 9.1 CD could allow under special circumstances, an authenticated user to obtain sensitive information due to a data leak from an error message within the pre-v7 pubsub logic. IBM X-Force ID: 177402.

Affected products

• IBM Mq Appliance: from 8.0, before 8.0.0.15 (fixed in 8.0.0.15); from 9.1.0.0, before 9.1.0.6 (fixed in 9.1.0.6); from 9.1.0.0, before 9.2.0.0 (fixed in 9.2.0.0)

Published 2020-07-28. Last modified 2026-06-17.