PSG qualified for the last four of the competition with an impressive performance on Tuesday, as their bid for a domestic treble gathered pace.
The Ligue 1 table-toppers took the lead on the stroke of half-time thanks to the influential Javier Pastore, who starred throughout the match.
The goal came shortly after star striker Zlatan Ibrahimovic had a volley correctly ruled out for offside, but just after the break, Bordeaux levelled proceedings through Andre Biyogo Poko.
That set up a tense finish, but just as extra time looked likely, PSG scored the all-important second goal.
Pastore was the provider, producing an exceptional dink that Rabiot ran onto in the penalty area.
And the midfielder scored a classy left-foot finish despite being under significant pressure with just four minutes left.
Matuidi wrapped up the win two minutes later, curling past Bordeaux goalkeeper Cedric Carrasso with his left foot.
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