diff --git a/src/main/java/com/microfocus/example/web/controllers/UserController.java b/src/main/java/com/microfocus/example/web/controllers/UserController.java
index 9928214e..f3034510 100644
--- a/src/main/java/com/microfocus/example/web/controllers/UserController.java
+++ b/src/main/java/com/microfocus/example/web/controllers/UserController.java
@@ -564,6 +564,8 @@ private static void writeXml(Document doc,
             throws TransformerException {
 
         TransformerFactory transformerFactory = TransformerFactory.newInstance();
+        transformerFactory.setAttribute(XMLConstants.ACCESS_EXTERNAL_DTD, "");
+        transformerFactory.setAttribute(XMLConstants.ACCESS_EXTERNAL_STYLESHEET, "");
         Transformer transformer = transformerFactory.newTransformer();
         
         DOMSource source = new DOMSource(doc);