diff --git a/src/app/app.module.ts b/src/app/app.module.ts
index b295b1723..d0a5dcfd4 100644
--- a/src/app/app.module.ts
+++ b/src/app/app.module.ts
@@ -52,6 +52,8 @@ export function createTranslateLoader(http: HttpClient): TranslateHttpLoader {
         IonicModule.forRoot(
             {
                 navAnimation: moodleTransitionAnimation,
+                innerHTMLTemplatesEnabled: true,
+                sanitizerEnabled: true,
             },
         ),
         HttpClientModule, // HttpClient is used to make JSON requests. It fails for HEAD requests because there is no content.
diff --git a/src/core/features/login/pages/site/site.ts b/src/core/features/login/pages/site/site.ts
index b85b1c865..cbca54a66 100644
--- a/src/core/features/login/pages/site/site.ts
+++ b/src/core/features/login/pages/site/site.ts
@@ -459,8 +459,8 @@ export class CoreLoginSitePage implements OnInit {
         });
 
         if (errorDetails) {
+            // Avoid sanitizing JS.
             const containerElement = alertElement.querySelector('.core-error-info-container');
-
             if (containerElement) {
                 containerElement.innerHTML = CoreErrorInfoComponent.render(errorDetails, errorCode);
             }
diff --git a/src/core/services/utils/dom.ts b/src/core/services/utils/dom.ts
index feae6ef72..d44738c6e 100644
--- a/src/core/services/utils/dom.ts
+++ b/src/core/services/utils/dom.ts
@@ -815,14 +815,20 @@ export class CoreDomUtilsProvider {
      * @returns Promise resolved with the alert modal.
      */
     async showAlertWithOptions(options: AlertOptions = {}, autocloseTime?: number): Promise<HTMLIonAlertElement> {
-        const hasHTMLTags = CoreTextUtils.hasHTMLTags(<string> options.message || '');
+        let message = typeof options.message == 'string'
+            ? options.message
+            : options.message?.value || '';
+
+        const hasHTMLTags = CoreTextUtils.hasHTMLTags(message);
 
         if (hasHTMLTags && !CoreSites.getCurrentSite()?.isVersionGreaterEqualThan('3.7')) {
             // Treat multilang.
-            options.message = await CoreLang.filterMultilang(<string> options.message);
+            message = await CoreLang.filterMultilang(message);
         }
 
-        const alertId = <string> Md5.hashAsciiStr((options.header || '') + '#' + (options.message || ''));
+        options.message = message;
+
+        const alertId = Md5.hashAsciiStr((options.header || '') + '#' + (message|| ''));
 
         if (this.displayedAlerts[alertId]) {
             // There's already an alert with the same message and title. Return it.