Authorization bypass through user-controlled key issue exists in EC-CUBE 2.11.0 through 2.12.2 and EC-Orange systems deployed before June 29th, 2015. If this vulnerability is exploited, a user of the affected shopping website may obtain other users' information by sending a crafted HTTP request.
The process function in data/class/pages/admin/customer/LC_Page_Admin_Customer_SearchCustomer.php in EC-CUBE Ver2 2.4.0 RC1 through 2.4.1, and Community Edition r18068 through r18428, allows remote attackers to obtain sensitive information (customer data) via unknown vectors related to sessions.