§ 1. A cleric is to be punished with deprivation of office and with other just penalties, not excluding, where the case calls for it, dismissal from the clerical state, if he: 1° commits an offence against the sixth commandment of the Decalogue with a minor or with a person who habitually has an imperfect use of reason or with one to whom the law recognises equal protection; 2° grooms or induces a minor or a person who habitually has an imperfect use of reason or one to whom the law recognises equal protection to expose himself or herself pornographically or to take part in pornographic exhibitions, whether real or simulated; 3° immorally acquires, retains, exhibits or distributes, in whatever manner and by whatever technology, pornographic images of minors or of persons who habitually have an imperfect use of reason.
Source: Code of Canon Law (Vatican.va)