No you cannot vent your bathroom exhaust fan into the attic.
Bathroom exaust into attic.
Bathroom fan vent code requirements include no venting to attic areas to help reduce mold or structural problems.
You should never exhaust the bathroom fan directly into the attic.
Bathroom exhaust fans perform an important function by removing excess moisture from your home.
So can you vent a bathroom exhaust fan into the attic.
It may also violate a shingle warranty.
Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside.