diff --git a/browser/ui/webui/new_tab_page/brave_new_tab_message_handler.cc b/browser/ui/webui/new_tab_page/brave_new_tab_message_handler.cc
index 9a909e7142cb..b406a23eca59 100644
--- a/browser/ui/webui/new_tab_page/brave_new_tab_message_handler.cc
+++ b/browser/ui/webui/new_tab_page/brave_new_tab_message_handler.cc
@@ -431,6 +431,7 @@ void BraveNewTabMessageHandler::OnJavascriptDisallowed() {
   if (tor_launcher_factory_)
     tor_launcher_factory_->RemoveObserver(this);
 #endif
+  weak_ptr_factory_.InvalidateWeakPtrs();
 }
 
 void BraveNewTabMessageHandler::HandleGetPreferences(
@@ -726,6 +727,11 @@ void BraveNewTabMessageHandler::HandleTodayGetDisplayAd(
         if (!handler) {
           return;
         }
+
+        if (!handler->IsJavascriptAllowed()) {
+          return;
+        }
+
         if (!success) {
           handler->ResolveJavascriptCallback(base::Value(callback_id),
                                              std::move(base::Value()));