Detail = new NavigationPage ((Page) Activator.CreateInstance (item.TargetType)); вредоносный код

Question

async void OnItemSelected(object sender, SelectedItemChangedEventArgs e)
       {
            var item = e.SelectedItem as MasterPageItem;
            if (item != null)
            {
                Detail = new NavigationPage((Page)Activator.CreateInstance(item.TargetType));
                masterPage.listView.SelectedItem = null;
                IsPresented = false;

            }
        }

В этом коде я получаю уязвимость вредоносного кода в Detail = new NavigationPage ((Page) Activator.CreateInstance (item.TargetType));