IBM MQ 8.0, (9.0, 9.1, 9.2 LTS), and (9.1 and 9.2 CD) are vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. IBM X-Force ID: 226339.

IBM MQ and MQ Appliance 8.0, 9.1 LTS, and 9.1 CD could allow an authenticated user cause a denial of service due to a memory leak. IBM X-Force ID: 175840.

IBM MQ 9.1.0.0, 9.1.0.1, 9.1.1, and 9.1.0.2 is vulnerable to a denial of service due to a local user being able to fill up the disk space of the underlying filesystem using the error logging service. IBM X-Force ID: 156398.

IBM MQ Java and JMS stores a password in client configuration files when trace is enabled which can be read by a local user.

IBM MQ 9.1.0.0 through 9.1.0.33 LTS, 9.2.0.0 through 9.2.0.40 LTS, 9.3.0.0 through 9.3.0.36 LTS, 9.30.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.17 LTS, and 9.4.0.0 through 9.4.4.1 CD

IBM MQ and IBM MQ Appliance 7.1, 7.5, 8.0, 9.0 LTS, 9.1 LTS, and 9.1 CD could allow a local attacker to obtain sensitive information by inclusion of sensitive data within runmqras data.