Fixes #15268 - limit user taxonomies using my scopes
Fixes CVE-2016-4475
(cherry picked from commit a30ab44ed6f140f1791afc51a1e448afc2ff28f9)
Fixes #15268 - limit user taxonomies using my scopes
Fixes CVE-2016-4475
(cherry picked from commit a30ab44ed6f140f1791afc51a1e448afc2ff28f9)