The Mesmerize & Materialis themes for WordPress are vulnerable to authenticated options change in versions up to, and including,1.6.89 (Mesmerize) and 1.0.172 (Materialis). This is due to 'companiondisablepopup' function only checking the nonce while sending user input to the 'updateoption' function. This makes it possible for authenticated attackers to change otherwise restricted options.