Exposure of Sensitive Information to an Unauthorized Actor
Yopify, an e-commerce notification plugin, up to April 06, 2017, leaks the first name, last initial, city, and recent purchase data of customers, all without user authorization.
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.