The Comments – wpDiscuz plugin for WordPress is vulnerable to HTML Injection in all versions up to, and including, 7.6.21. This is due to a lack of filtering of HTML tags in comments. This makes it possible for unauthenticated attackers to add HTML such as hyperlinks to comments when rich editing is disabled.
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.