Exposure of Sensitive Information to an Unauthorized Actor
Moodle before 2.2.2 has a course information leak in gradebook where users are able to see hidden grade items in export
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.