Exposure of Sensitive Information to an Unauthorized Actor
Wysi Wiki Wyg 1.0 allows remote attackers to obtain system information via an invalid categup parameter to index.php, which calls the phpinfo function.
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.