The Nagios process in (1) Nagios before 3.0.5 and (2) op5 Monitor before 4.0.1 allows remote authenticated users to bypass authorization checks, and trigger execution of arbitrary programs by this process, via an (a) custom form or a (b) browser addon.
Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control.