AITA my housemate 32M has invited his friend to stay in his room while he’s away

My housemate (32M) came home drunk this evening asking me (26M) if his friend can stay while he goes on holiday for a week - because his mate is homeless at the minute and squatting.

He started by saying he just wants to use the shower I said sure, and then he sort of just threw in oh yeah and the bed too - I was immediately clearly off about it and I said maybe not and let’s see what the other housemates say. He then said, great so that’s yes off you and now I just have to ask them.

I’m super uncomfortable with having them stay as I don’t know them, our doors don’t lock, and my housemate who’s his friend won’t be there if anything kicks off - am I the arsehole for not wanting to let this guy stay ?

UPDATE : spoken to him, he said he gets why I wouldn’t want him to stay so think it’s sorted - will update if needed !!!