The Buzz Club – Night Club, DJ and Music Festival Event WordPress Theme theme for WordPress is vulnerable to unauthorized modification of data that can lead to a denial of service due to a missing capability check on the 'cmsmasters_hide_admin_notice' function in all versions up to, and including, 2.0.4. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update option values to 'hide' on the WordPress site. This can be leveraged to update an option that would create an error on the site and deny service to legitimate users or be used to set some values to true such as registration.

The WeStand WordPress theme before 2.1, footysquare WordPress theme, aidreform WordPress theme, statfort WordPress theme, club-theme WordPress theme, kingclub-theme WordPress theme, spikes WordPress theme, spikes-black WordPress theme, soundblast WordPress theme, bolster WordPress theme from ChimpStudio and PixFill does not have any authorisation and upload validation in the lang_upload.php file, allowing any unauthenticated attacker to upload arbitrary files to the web server.

The ThemeREX Addons plugin before 2020-03-09 for WordPress lacks access control on the /trx_addons/v2/get/sc_layout REST API endpoint, allowing for PHP functions to be executed by any users, because includes/plugin.rest-api.php calls trx_addons_rest_get_sc_layout with an unsafe sc parameter.