diff --git a/src/core/components/providers/markdown.jsx b/src/core/components/providers/markdown.jsx
index 51ba1c1b7c6..4da26ef0af7 100644
--- a/src/core/components/providers/markdown.jsx
+++ b/src/core/components/providers/markdown.jsx
@@ -68,7 +68,7 @@ export function sanitizer(str, { useUnsafeMarkdown = false } = {}) {
return DomPurify.sanitize(str, {
ADD_ATTR: ["target"],
- FORBID_TAGS: ["style"],
+ FORBID_TAGS: ["style", "form"],
ALLOW_DATA_ATTR,
FORBID_ATTR,
})
diff --git a/test/unit/xss/markdown-script-sanitization.jsx b/test/unit/xss/markdown-script-sanitization.jsx
index 72a96414b58..3218dc3224e 100644
--- a/test/unit/xss/markdown-script-sanitization.jsx
+++ b/test/unit/xss/markdown-script-sanitization.jsx
@@ -16,6 +16,12 @@ describe("Markdown Script Sanitization", function() {
const el = render(