CVE-2025-8999

The Sydney theme for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the ‘activate_modules’ function in all versions up to, and including, 2.56. This makes it possible for authenticated attackers, with Subscriber-level access and above, to activate or deactivate various theme modules.

More information : https://themes.trac.wordpress.org/browser/sydney/2.55/inc/classes/class-sydney-modules.php#L166