Five Star Business Profile and Schema 2.3.20 - 2.3.21 - Author+ Sensitive Data Disclosure via Schema Field Default Callback

The Five Star Business Profile and Schema WordPress plugin before 2.4.0 does not properly restrict the callbacks used to resolve schema field default values, allowing authenticated users with Author-level access and above to store input that discloses sensitive data, including other users' password hashes and arbitrary site option values, in public output readable by unauthenticated visitors.