This is correct. If all you're looking for is a cure, you can use any type of divine alter.Can't you get healed at any sort of church/temple as well? It may only be diseases, but you could get rid of it by going up to one of the alters in a temple and receiving a blessing. It will give you a blessing buff as well as remove any diseases you have on you.
Thanks to all for the help, as soon asi get out of Mzulft Boilery, I will seek out a temple.The Halls of the Dead is what your looking for. Stand at the base of the stairs leading up to dragonsreach. Turn left 90 degrees and there will be the Temple of Mara. There is a stone in there but if you dont want that active effect, go around the building and there will be stairs leading down. (A)Open Halls of the Dead
Also, you mean Kynareth (sp?). Mara's temple is in Riften.The Halls of the Dead is what your looking for. Stand at the base of the stairs leading up to dragonsreach. Turn left 90 degrees and there will be the Temple of Mara. There is a stone in there but if you dont want that active effect, go around the building and there will be stairs leading down. (A)Open Halls of the Dead