Exposure of Sensitive Information to an Unauthorized Actor
The WP Backup+ (aka WPbackupplus) plugin through 2018-11-22 for WordPress allows remote attackers to obtain sensitive information from server folders and files, as demonstrated by download.sql.
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.