A statement from the office of French President Francois Hollande says three of the wounded are in serious condition.
President Hollande dispatched Defense Minister Jean-Yves Le Drian to Afghanistan following the attack.
Afghan officials say the attack happened in Kapisa province, where the majority of soldiers are French.
The Taliban claimed responsibility for the attack, saying both French and Afghan forces suffered casualties.
Mr. Hollande announced last month France will withdraw most of its troops in Afghanistan by the end of the year, two years ahead of the timetable agreed by NATO. VoA.