Exposure of Sensitive Information to an Unauthorized Actor
The Open Atrium Core module for Drupal before 7.x-2.22 allows remote attackers to bypass access restrictions and read file attachments that have been removed from a node by leveraging a previous revision of the node.
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.