<!DOCTYPE foo [<!ENTITY xeeja4s00 "n0vrc"><!ENTITY xeeja4s01 "&xeeja4s00;&xeeja4s00;"><!ENTITY xeeja4s02 "&xeeja4s01;&xeeja4s01;">]><h1>HACKERONE FOR THEE ECLIPSE&xeeja4s02;</h1> <button>POC</button>