added ZF2013-04
added ZF2013-04

markstory/security-advisories,weierophinney/security-advisories,Ocramius/security-advisories,FriendsOfSilverStripe/security-advisories,jeskew/security-advisories,BCyberSavvy/PHP,kdambekalns/security-advisories,marcomenzel/security-advisories,xabbuh/security-advisories,FriendsOfPHP/security-advisories