His condition is not thought to be life threatening.
Officers say no arrests have been made in connection with the attack and enquiries are ongoing.Â A police cordon remains around the scene of the bloody attack.
The incident happened close to St John Cass secondary school on Stepney Way.
A spokesman for the Met said: 'Officers attended along with London Ambulance Service and London's Air Ambulance.
âWe sent two ambulances, an advanced paramedic and an incident response officer. A second teenager was treated at the scene for a head injury.â.
A young man has been fatally stabbed in Forest Gate in east London, police have said.
His death came just half an hour before a woman was stabbed to death in family row in Brixton, according to neighbours.
He was taken into custody at a north London police station.
It is believed the victim and suspect were known to each other.
A 19-year-old man was arrested on suspicion of affray near the scene of another separate attack in Haringey, north London.