OpenStack Orchestration API (Heat) 2013.2 through 2013.2.3 and 2014.1, when creating the stack for a template using a provider template, allows remote authenticated users to obtain the provider template URL via the resource-type-list.
"https://github.com/pypa/advisory-database/blob/main/vulns/openstack-heat/PYSEC-2026-889.yaml"