Exposure of Sensitive Information to an Unauthorized Actor
The Path Breadcrumbs module before 7.x-3.2 for Drupal allows remote attackers to bypass intended access restrictions and obtain sensitive node titles by reading a 403 Not Found page.
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.