There is no misinformation at all. Here is item 1129 from the CCC, with a footnote [51] from the Council of Trent:
1129 The Church affirms that for believers the sacraments of the New Covenant are necessary for salvation.51
Then we have this in 1257 with footnote [59] which is a reference to John 3:5
1257 The Lord himself affirms that Baptism is necessary for salvation.59
But when you turn to John 3:5, it does NOT mention baptism but "water", and the Bible says that water is a metaphor for the Word of God, and that we are born again through the Word of God (which is the Gospel). I have purposely capitalized "Word" below, since that is how we understand it today.
Jesus answered, Verily, verily, I say unto thee, Except a man be born of water and of the Spirit, he cannot enter into the kingdom of God. (John 3:5)
Husbands, love your wives, even as Christ also loved the church, and gave himself for it; That he might sanctify and cleanse it with the washing of water by the Word... (Eph 5:25,26)
Being born again, not of corruptible seed, but of incorruptible, by the Word of God, which liveth and abideth for ever. For all flesh is as grass, and all the glory of man as the flower of grass. The grass withereth, and the flower thereof falleth away: But the Word of the Lord endureth for ever. And this is the Word which by the gospel is preached unto you. (1 Pet 1:23-25).
For I am not ashamed of the gospel of Christ: for it is the power of God unto salvation to every one that believeth; to the Jew first, and also to the Greek. (Rom 1:16)
So how did the Catholic Church miss all of this and insist that the water of baptism regenerates a soul and is necessary for salvation?
If that were true, then Paul would not have said this, and could not have said this:
For Christ sent me not to baptize, but to preach the gospel: not with wisdom of words, lest the cross of Christ should be made of none effect. For the preaching of the cross is to them that perish foolishness; but unto us which are saved it is the power of God. (1 Cor 1:17,18)
If baptism were necessary for salvation Paul would have said "to preach the Gospel as well as to baptize" since both would be critical components.