The voodoo is frowned upon by the Catholic Church, but (in practice) it is tolerated as many other pagan practices, especially in underdeveloped countries.
This is what We call "religious syncretism".
In 2011, Benedict XVI blasted "occultism and evil spirits" in an audience of priests, seminarians, religious and laity in the St. Gall Seminary in Ouidah.
"The love for the God who reveals himself and for his word, the love
for the sacraments and the church, are an efficacious antidote against
a syncretism which deceives,” the pope said this morning in Ouidah.
“This love favors the correct integration of the authentic values of
cultures into the Christian faith,” he said. “It liberates from
occultism and vanquishes evil spirits, for it is moved by the power of
the Holy Spirit.”
When John Paul II visited Benin in 1993, his trip coincided with a
major national celebration of the country's voodoo heritage titled
"Ouidah 92." The pope met a voodoo high priest, with a picture of that
encounter splashed across the front page of L'Osservatore Romano, the
daily Vatican newspaper.
That encounter has long been controversial in more traditional
Catholic circles, who regarded it as tantamount to a papal endorsement
of heterodox worship. On this trip, Benedict has expressed admiration
for elements of traditional African religion, but has also been
careful to condemn "syncretism" and to condemn what he sees as its