Exposure of Sensitive Information to an Unauthorized Actor
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.
CWE-200 - Information Exposure
An information exposure vulnerability is categorized as an information flow (IF) weakness, which can potentially allow unauthorized access to otherwise classified information in the application, such as confidential personal information (demographics, financials, health records, etc.), business secrets, and the application's internal environment.