diff --git a/server/Application/Api/Model/AttachmentModel.class.php b/server/Application/Api/Model/AttachmentModel.class.php
index 3dac201f4..ee9fd9f9c 100644
--- a/server/Application/Api/Model/AttachmentModel.class.php
+++ b/server/Application/Api/Model/AttachmentModel.class.php
@@ -304,6 +304,7 @@ public function isDangerFilename($filename){
 			|| $isDangerStr($filename , "%")
 			|| $isDangerStr($filename , ".xml")
 			|| $isDangerStr($filename , ".xxhtml")
+			|| $isDangerStr($filename , ".aspx")			
 		) {
 			return true;
 		}