The mndpsingh287 File Manager plugin V2.9 for WordPress has XSS via the lang parameter in a wp-admin/admin.php?page=wp_file_manager request because set_transient is used in file_folder_manager.php and there is an echo of lang in lib\wpfilemanager.php.

The File Manager plugin for WordPress is vulnerable to authorization bypass due to a missing capability check in the /inc/root.php file in versions up to, and including, 3.0. This makes it possible for unauthenticated attackers to download arbitrary files from the server and upload arbitrary files that can be used for remote code execution.

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.

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 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.