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.
Exposure of Sensitive Information to an Unauthorized Actor The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.