Foreman before 1.7.5 allows remote authenticated users to bypass organization and location restrictions by connecting through the REST API.
https://groups.google.com/forum/#%21topic/foreman-users/qAGZh5n6n6M
https://groups.google.com/forum/#%21topic/foreman-announce/37KYWhIk4FY
https://github.com/theforeman/foreman/pull/2273
https://access.redhat.com/errata/RHSA-2015:1592