You NEVER read that in any official Catholic doctrine. Stop spreading heresy and outright falsehoods.
With not too much research, it seems we are learning more about your religion than you guys are...
Iscool found a good reference here from ADIUTRICEM (On the Rosary), Encyclical of Pope Leo XIII...
“9. Since faith is the foundation, the source, of the gifts of God by which man is raised above the order of nature and is endowed with the dispositions requisite for life eternal, we are in justice bound to recognize the hidden influence of Mary in obtaining the gift of faith and its salutary cultivation - of Mary who brought the “author of faith”[6] into this world and who, because of her own great faith, was called “blessed.” “O Virgin most holy, none abounds in the knowledge of God except through thee; none, O Mother of God, attains salvation except through thee; none receives a gift from the throne of mercy except through thee.””
“”O Virgin most holy, none ... attains salvation except through thee; ...””
So it would seem that, yes, the belief is that you must go through Mary to be saved.
As a Catholic, the only thing I am REQUIRED to believe is the Apostle's Creed....
The rest is merely writings of the saints and popes....and culture. The essence of the Catholic faith and what we are required to believe is in the creed....ALL of it.
“With not too much research, it seems we are learning more about your religion than you guys are...
9. Since faith is the foundation, the source, of the gifts of God by which man is raised above the order of nature and is endowed with the dispositions requisite for life eternal, we are in justice bound to recognize the hidden influence of Mary in obtaining the gift of faith and its salutary cultivation - of Mary who brought the “author of faith”[6] into this world and who, because of her own great faith, was called “blessed.” “O Virgin most holy, none abounds in the knowledge of God except through thee; none, O Mother of God, attains salvation except through thee; none receives a gift from the throne of mercy except through thee.”
Demonic teaching from Rome.