Stored XSS via <iframe> in HAX CMS allows access to sensitive client-side data and account takeover
A stored cross-site scripting (XSS) vulnerability exists in HAX CMS due to improper sanitization of <iframe> elements. The application allows javascript: URIs in the src attribute, which are executed when a malicious page is viewed. This enables attackers to execute arbitrary JavaScript in the context of the victim’s browser and access sensitive data exposed to client-side scripts.