Catholic Priests can share in sin during the sacrament of Confession

“The priests of the Lord must therefore, so far as reason and prudence suggest, impose salutary and suitable satisfactions, in keeping with the nature of the crimes and the ability of the penitents; otherwise, if they should connive at sins and deal too leniently with penitents, imposing certain very light works for very grave offenses, they might become partakers in the sins of others.” Council of Trent, Session XIV, CHAPTER VIII
“connive in sins” various descriptions Connivance is the act of allowing wrongdoing to be covered up or overlooked, whether actively or passively; "Connivance" derives from the Latin coniveo: "to close the eyes, to overlook."; In theological terms, connivance is a useful term, especially for the passive allowance of immoral behavior; culpable indifference or criminal sympathy with the sin; Wink at his fault, and forbear to accuse and punish him; indifference to precise regulations of religion, indisposition of heart towards "perfect holiness"; a loose and …More