The Modula Image Gallery plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the 'ajax_unzip_file' function in versions 2.13.1 to 2.13.2. This makes it possible for authenticated attackers, with Author-level access and above, to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php).
https://plugins.trac.wordpress.org/changeset/3407949/modula-best-grid-gallery
https://plugins.trac.wordpress.org/changeset/3395701/modula-best-grid-gallery#file5
https://github.com/WPChill/modula-lite/commit/90c8eb982f71b31584d9be9359e3b594e03927d7