The following decree comes from the Apostolic Penitentiary:
“Where the individual faithful find themselves in the painful impossibility of receiving sacramental absolution, it should be remembered that perfect contrition, coming from the love of God, beloved above all things, expressed by a sincere request for forgiveness (that which the penitent is at present able to express) and accompanied by votum confessionis, that is, by the firm resolution to have recourse, as soon as possible, to sacramental confession, obtains forgiveness of sins, even mortal ones (cf. CCC, no. 1452).”