OWASP AntiSamy before 1.6.4 allows XSS via HTML attributes when using the HTML output serializer (XHTML is not affected). This was demonstrated by a javascript: URL with : as the replacement for the : character.
{ "github_reviewed_at": "2021-07-19T21:38:51Z", "severity": "MODERATE", "nvd_published_at": "2021-07-19T15:15:00Z", "github_reviewed": true, "cwe_ids": [ "CWE-79" ] }