Plone though 5.2.4 allows SSRF via the lxml parser. This affects Diazo themes, Dexterity TTW schemas, and modeleditors in plone.app.theming, plone.app.dexterity, and plone.supermodel.
{ "versions": [ { "introduced": "0" }, { "last_affected": "5.2.4" } ] }
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-33511.json"