The NinjaScanner – Virus & Malware scan plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the 'nscan_ajax_quarantine' and 'nscan_quarantine_select' functions in all versions up to, and including, 3.2.5. This makes it possible for authenticated attackers, with Administrator-level access and above, to delete arbitrary files on the server, including files outside the WordPress root directory.
https://plugins.trac.wordpress.org/changeset/3336569/
https://plugins.trac.wordpress.org/browser/ninjascanner/trunk/lib/tab_quarantine.php#L114
https://plugins.trac.wordpress.org/browser/ninjascanner/trunk/lib/ajax_hooks.php#L331