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.
{ "nvd_published_at": "2021-05-21T22:15:00Z", "cwe_ids": [ "CWE-918" ], "severity": "HIGH", "github_reviewed": true, "github_reviewed_at": "2021-05-27T21:47:01Z" }