OpenStack Magnum passes OpenStack credentials into the Heat templates creating its instances. While these should just be used for retrieving the instances’ SSL certificates, they allow full API access, though and can be used to perform any API operation the user is authorized to perform.
bugs.launchpad.net/magnum/+bug/1620536
bugzilla.suse.com/show_bug.cgi?id=998182
github.com/openstack/magnum
github.com/openstack/magnum/commit/e93d82e8b3bc19211efd54edc17aebdca50670c1
nvd.nist.gov/vuln/detail/CVE-2016-7404
opendev.org/openstack/magnum/commit/0bb0d6486d6771ee21bbf897a091b1aa59e01b22
web.archive.org/web/20210124052053/https://www.securityfocus.com/bid/98467