Plone before 5.2.3 allows XXE attacks via a feature that is protected by an unapplied permission of plone.schemaeditor.ManageSchemata (therefore, only available to the Manager role).
{ "versions": [ { "introduced": "0" }, { "fixed": "5.2.3" } ] }
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-28736.json"