Exposure of Sensitive Information to an Unauthorized Actor
Moodle 2.0.x before 2.0.7 and 2.1.x before 2.1.4, when an anonymous front-page forum is enabled, allows remote attackers to obtain session keys for their sessions by visiting the front 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.