The vulnerability stems from unfiltered pass-through values in the IFrame module. In ASP.NET WebForms architectures like DNN, the Page_Load event handler is the primary location for parameter processing. The BindContent method is a common pattern for UI data binding. Both would be involved in handling URL parameters and rendering them in the page. Without seeing the actual patch, we infer these functions based on 1) the module architecture, 2) XSS attack patterns requiring parameter processing and raw output, and 3) DNN's convention of using Page_Load/BindContent methods for module logic. Confidence is medium due to reliance on architectural patterns rather than direct patch analysis.