Canon 1196 – In addition to the Roman Pontiff, the following can dispense from private vows for a just cause provided that a dispensation does not injure a right acquired by others:
1° the local ordinary and the pastor with regard to all their subjects and even travelers;
2° the superior of a religious institute or society of apostolic life if it is clerical and of pontifical right with regard to members, novices, and persons who live day and night in a house of the institute or society;
3° those to whom the Apostolic See or the local ordinary has delegated the power of dispensing.
Dispensation from a vow is its complete cancellation for a just reason by an authority competent in law. Just reasons include the public good, a serious difficulty in fulfilling the vow, excessive scrupulosity. In doubt or error about the adequacy of the reason, a dispensation may be lawfully given.