That is a typo.
You're right - that is definitely a typo. The CEV is meant to carry at least 4 people and hopefully 6-8, but it will actually be lighter than the Space Shuttle in any event.
Anyhow, based on the technology we have now, it would be totally absurd to design a craft to lift 40 people and the necessary supplies off the Earth for an expedition. It would make far more sense to assemble such an ambitious craft in orbit or on a lunar base (of course, we'd first need to build the infrastructure in either case) and then just deliver the astronauts to take off from there.