IBM WebSphere MQ 8.0.0.2 through 8.0.0.8 and 9.0.0.0 through 9.0.0.3 could allow users to have more authority than they should have if an MQ administrator creates an invalid user group name. IBM X-Force ID: 142888.
https://www.ibm.com/support/docview.wss?uid=ibm10716113