Can a cranial spinal fluid leak be caused by a papilledema or swelling of the optic nerve?

Different items. Papilledema is a sign of increased intracranial pressure of any etiology, and can be due to tumor, hydrocephalus, brain hemorrhage, infections. Swelling of the optic nerve can be due to optic neuritis or other inflammatory problems. Spinal fluid leaks can be due to trauma over skull such as cribiform plate fracture. If severe trauma, perhaps all could occur together.