The Ovic Responsive WPBakery WordPress plugin before 1.2.9 does not limit which options can be updated via some of its AJAX actions, which may allow attackers with a subscriber+ account to update blog options, such as 'users_can_register' and 'default_role'. It also unserializes user input in the process, which may lead to Object Injection attacks.
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
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https://wpscan.com/vulnerability/35c9a954-37fc-4818-a71f-34aaaa0fa3db | third party advisory vdb entry exploit technical description |