User Management <= 1.2 - Missing Authorization to Unauthenticated Plugin Settings Modification

The User Management plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.2. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to modify the plugin's export field configuration stored in the uiewp_export_field option, controlling which user fields such as password hashes are included in CSV exports and how columns are mapped during imports.