The past participle of transitive verbs, verbs which refer to a process or event that affects an object, can be used in a predicate, and in such predicates they refer to what happened to the object, that is, to the event and its effect. In such predicates the affected object becomes the subject of the predicate:
The bullfighter's thigh was gored.
The past participle can refer to the act of goring by the bull's horn, that is, to the action that produced the result; or it can refer to the resulting state, the condition of the thigh. Or both. We cannot really say which it is in such a simple predicate using "is" or "was".
But there is no need to pigeonhole the word because we understand the past participle of a transitive verb to refer to the effect of an action upon an object.