Exposure of Sensitive Information to an Unauthorized Actor
monitor/index.php in op5 Monitor and op5 Appliance before 5.5.1 allows remote authenticated users to obtain sensitive information such as database and user credentials via error messages that are triggered by (1) a malformed hoststatustypes parameter to status/service/all or (2) a crafted request to config.
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.