During HE deployment via cockpit-ovirt, cockpit-ovirt generates an ansible variable file `/var/lib/ovirt-hosted-engine-setup/cockpit/ansibleVarFileXXXXXX.var` which contains the admin and the appliance passwords as plain-text. At the of the deployment procedure, these files are deleted.
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10139
https://access.redhat.com/errata/RHSA-2019:2437