WordPress Brandfolder Plugin 3.0 Local File Inclusion via callback.php

WordPress Brandfolder plugin version 3.0 and earlier contains a local file inclusion vulnerability in callback.php that allows unauthenticated attackers to include arbitrary files by manipulating the wp_abspath parameter. Attackers can supply path traversal sequences or remote URLs through the wp_abspath parameter to read sensitive files like wp-config.php or execute remote code.