Import and export users and customers < 1.26.9 - Unauthenticated Information Exposure

Description

The Import and export users and customers plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.26.8 via the fileupload_process function that uploads an import file in a public directory and does not subsequently delete it. This makes it possible for unauthenticated attackers to extract sensitive data including user data.