diff --git a/front/assets/js/flaky_tests/components/actions.tsx b/front/assets/js/flaky_tests/components/actions.tsx
index 60579b4d8..c13341a5d 100644
--- a/front/assets/js/flaky_tests/components/actions.tsx
+++ b/front/assets/js/flaky_tests/components/actions.tsx
@@ -10,6 +10,7 @@ import * as types from "../types";
 import { auto } from "@popperjs/core";
 import { Headers } from "../network/request";
 import * as marked from "marked";
+import DOMPurify from "dompurify";
 
 export const Actions = ({ item }: { item: FlakyTestItem, }) => {
   const config = useContext(stores.Config.Context);
@@ -157,7 +158,18 @@ const TicketDetail = (props: TicketDetailProps) => {
     **Commit**: ${props.item.latestDisruptionSha()}
 
     **File**: ${props.item.testFile}`;
-    return marked.parse(markdown);
+
+    const rawHtml = marked.parse(markdown);
+    return DOMPurify.sanitize(rawHtml, {
+      ALLOWED_TAGS: [
+        `h1`, `h2`, `h3`, `h4`, `h5`, `h6`,
+        `p`, `br`, `strong`, `em`, `u`, `strike`,
+        `ul`, `ol`, `li`,
+        `blockquote`, `code`, `pre`
+      ],
+      ALLOWED_ATTR: [`title`],
+      ALLOWED_SCHEMES: [`http`, `https`, `mailto`]
+    });
   };