diff --git a/pkg/converter/markdown.go b/pkg/converter/markdown.go
index b1e2a4185..f6e76c450 100644
--- a/pkg/converter/markdown.go
+++ b/pkg/converter/markdown.go
@@ -32,7 +32,10 @@ func Markdown2HTML(source string) string {
 		log.Error(err)
 		return source
 	}
-	return buf.String()
+	html := buf.String()
+	filter := bluemonday.NewPolicy()
+	html = filter.Sanitize(html)
+	return html
 }
 
 // Markdown2BasicHTML convert markdown to html ,Only basic syntax can be used