I would keep your rabbit from doing that in the future.
Initially I was thinking it may be a result of a parasite which has evolved centering around cats, which causes prey species (mainly mice) to no longer have fear, but feel drawn towards the cat scent. It’s called toxoplasma gondii, the parasite. It develops in the cats system, exits through fecal matter, then a mice will contract it. It travels to the brain and rewires the mice to no longer fear cats. So I was thinking, perhaps this was in the works with your rabbit.
I tried googling it and it immediately came up with toxoplasmosis (http://wabbitwiki.com/wiki/Toxoplasmosis). So for safety reasons, the explanation of why aside, I’d keep your rabbit away.
The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.