diff --git a/packages/twenty-front/src/modules/advanced-text-editor/utils/__tests__/sanitizeHtmlPreview.test.ts b/packages/twenty-front/src/modules/advanced-text-editor/utils/__tests__/sanitizeHtmlPreview.test.ts
index a9d53addc6..09ff81d683 100644
--- a/packages/twenty-front/src/modules/advanced-text-editor/utils/__tests__/sanitizeHtmlPreview.test.ts
+++ b/packages/twenty-front/src/modules/advanced-text-editor/utils/__tests__/sanitizeHtmlPreview.test.ts
@@ -53,6 +53,19 @@ describe('sanitizeHtmlPreview', () => {
     ).toContain('data:image/png');
   });
 
+  it('should remove templates instead of leaving their handlers unreachable', () => {
+    expect(
+      sanitizeHtmlPreview(
+        '<template><img src=x onerror="alert(1)"></template>',
+      ),
+    ).toBe('');
+    expect(
+      sanitizeHtmlPreview(
+        '<div><template><img src=x onerror="alert(1)"></template></div>',
+      ),
+    ).toBe('<div></div>');
+  });
+
   it('should strip srcdoc and formaction attributes', () => {
     expect(
       sanitizeHtmlPreview('<div srcdoc="<script>x</script>">a</div>'),
diff --git a/packages/twenty-front/src/modules/advanced-text-editor/utils/sanitizeHtmlPreview.ts b/packages/twenty-front/src/modules/advanced-text-editor/utils/sanitizeHtmlPreview.ts
index 3638d76959..9501658c8d 100644
--- a/packages/twenty-front/src/modules/advanced-text-editor/utils/sanitizeHtmlPreview.ts
+++ b/packages/twenty-front/src/modules/advanced-text-editor/utils/sanitizeHtmlPreview.ts
@@ -1,5 +1,5 @@
 const BLOCKED_ELEMENT_SELECTOR =
-  'script, iframe, frame, object, embed, link, meta, base, style, svg, math';
+  'script, iframe, frame, object, embed, link, meta, base, style, svg, math, template';
 
 const URL_ATTRIBUTE_NAMES = ['href', 'src', 'xlink:href', 'action'];