The legendary Brazil skipper may be slammed with a 10-month jail term if found guilty of forging paperwork to obtain EU citizenship in 2001.
The former AS Roma player is one of 11 players to have allegedly gained citizenship illegally. Roma president Franco Sensi, Cafu's wife and former Giallorossi striker Gustavo Bartelt are also under investigation on related charges.
Even if the 36-year-old Milan man is sentenced, it is unlikely that he would serve the prison term.
In Italian courts it is typical for first-time offenders to receive suspended sentences for judgments mandating less than two years in jail time.
Brazil will kick-off their World Cup campaign on Tuesday when they play against Group F contenders Croatia in Berlin before taking on Australia and Japan.