It sure does. Constantly.
Tell us where Scripture states the perpetual virginity of Mary, the immaculate conception, the assumption of Mary, that Jesus didn't have any siblings, commands to pray to saints, use of holy water, that tradition is to be of equal authority with Scripture, that the church is infallible in morality and faith, that it wrote the OT.
To start with.... There's lots more contradictions between what Scripture teaches and the Bible teaches. If the Catholic church did indeed write the Bible, you'd think it would have been more careful to make sure that the Bible reflected Catholic teaching better.
Which shouldn't be surprising since it is he Church who wrote the New Testament and assembled, canonized and explained the Old.
The Catholic church simply cannot take credit for the OT, no matter how much they want to. It was recognized by Jews and Christ Himself as Scripture well before the Catholic church was recorded to have come along.
The Church did not write the New Testament to justify her teachings but rather wrote the New Testament in order to record the teaching of Christ and His apostles in direct literal form. The rules for inclusion of a book in the canon were: (1) certainty of apostolic origin; (2) consistency with the core teaching of the Church as she already knew it from the Sacred Tradition and (3) continual use of the book in liturgy. Naturally, the teaching of the Church was broader even in the early times and of course, as the scripture informs us, the Church never stopped receiving the instruction of the Holy Ghost even after the canon was closed (John 14:16, 26).
None of the things you cite are in contradiction with the scripture; some of them simply are not discussed in the scripture much. In that category are the details of the live of Mary and details of everyday piety such as holy water (which reminds us of the baptismal water which is very much in the scripture). Others are indeed taught in the scripture: the equal authority of the tradition (2 Thess. 2:14), and the infallibility of the Church (Matthew 16:18, 18:18, Ephesians 5:27). Finally, the Church never claimed to have written the Old Testament. The Church did, however, take seriously the teaching of St. Paul to Timothy where he said that "all" of the scripture St. Timothy knew froom his youth is inspired by God, unlike the Protestant charlatans that dropped the books of the Old Testament they did not like, to their eternal shame.