we never had a problem with my cat and my nieces and nephews & they were usually in a basinette or on the floor when they visited, also my brother had a cat when they were little as well

my cat poked her nose over the edge of the basinette once, didn't like what she saw/smelt and never went near the babies again - she'd not even show a claw when they started climbing over her as they got older (she was a kitten when the 2nd one was born) - she just used to let them do whatever until they let go enough for her to run