Gallery 1.5.x before 1.5.10 and 1.6 before 1.6-RC3, when register_globals is enabled, allows remote attackers to bypass authentication and gain administrative via unspecified cookies. NOTE: some of these details are obtained from third party information.
https://exchange.xforce.ibmcloud.com/vulnerabilities/46804
http://www.securityfocus.com/bid/32440