Multiple cross-site scripting (XSS) vulnerabilities in HTMLy 2.7.4 allow remote attackers to inject arbitrary web script or HTML via the (1) destination parameter to delete feature; the (2) destination parameter to edit feature; (3) content parameter in the profile feature.
https://www.netsparker.com/web-applications-advisories/
http://seclists.org/fulldisclosure/2019/Feb/40
http://packetstormsecurity.com/files/151733/HTMLy-2.7.4-Cross-Site-Scripting.html