Plone through 5.2.4 allows XSS via the inline_diff methods in Products.CMFDiffTool.
{ "nvd_published_at": "2021-05-21T22:15:00Z", "cwe_ids": [ "CWE-79" ], "severity": "MODERATE", "github_reviewed": true, "github_reviewed_at": "2021-05-27T22:17:45Z" }