The File Manager plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 7.2.5 via the fm_download_backup function. This makes it possible for authenticated attackers, with administrator access and above, to read the contents of arbitrary zip files on the server, which can contain sensitive information.
The File Manager plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 7.2.4. This is due to missing or incorrect nonce validation on the wp_file_manager page that includes files through the 'lang' parameter. This makes it possible for unauthenticated attackers to include local JavaScript files that can be leveraged to achieve RCE via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. This issue was partially patched in version 7.2.4, and fully patched in 7.2.5.
The File Manager plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 7.2.1 due to insufficient randomness in the backup filenames, which use a timestamp plus 4 random digits. This makes it possible for unauthenticated attackers, to extract sensitive data including site backups in configurations where the .htaccess file in the directory does not block access.
The File Manager Pro plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 8.3.4 via the mk_check_filemanager_php_syntax AJAX function. This makes it possible for authenticated attackers, with subscriber access and above, to execute code on the server. Version 8.3.5 introduces a capability check that prevents users lower than admin from executing this function.
In the default configuration of the File Manager WordPress plugin before 7.1, a Reflected XSS can occur on the endpoint /wp-admin/admin.php?page=wp_file_manager_properties when a payload is submitted on the User-Agent parameter. The payload is then reflected back on the web application response.
mndpsingh287 WP File Manager v6.4 and lower fails to restrict external access to the fm_backups directory with a .htaccess file. This results in the ability for unauthenticated users to browse and download any site backups, which sometimes include full database backups, that the plugin has taken.