The Property plugin for WordPress is vulnerable to Privilege Escalation due to a missing capability check on the use of the property_package_user_role metadata in versions 1.0.5 to 1.0.6. This makes it possible for authenticated attackers, with Author‐level access and above, to elevate their privileges to that of an administrator by creating a package post whose property_package_user_role is set to administrator and then submitting the PayPal registration form.
https://wordpress.org/plugins/property/#developers
https://plugins.trac.wordpress.org/changeset/3299714/
https://plugins.trac.wordpress.org/browser/property/tags/1.0.6/property.php#L1964