It’s not a question of active or passive voice. “Comprise” is similar to “include” or “contain”. “Compose” is similar to “make up” or “constitute”. Parts compose the whole, or the whole is composed of parts. The whole comprises parts. It’s rare to say the parts are comprised by the whole, but would be correct. The OED listed an example of this.
Unfortunately one often hears “comprised” said where “composed” would make more sense, perhaps because the words sound similar.
Sadly, one of the earlier uses of “comprised” where “composed” would make more sense is attributed to Jimmy Carter, who is generally pretty careful with his grammar. Thus I was pleased to read “comprised” used correctly in his book Palestine: Peace, Not Apartheid the other day.