Woolloomooloo stabbing: Man critical with knife wound

A stabbing attack in Sydney that left a teenager in need of surgery was possibly over money.

Corey McNamara, 18, was badly injured in a targeted stabbing in a driveway outside his home in Plunkett Street, Woolloomooloo.

Emergency services were called at around 11.45pm last night.

The victim, who is known to police, was taken to St Vincent's Hospital with woulds to his arms and legs.

He is in a "serious but stable" condition and surgery may be required later today.

It is believed the attack occurred after a dispute between two men, possibly over money.

CCTV footage appears to show the suspected attacker fleeing after the stabbing.

Witnesses said there was a lot of blood at the scene.

"He was screaming that he was hurt, he was screaming that he was bleeding," witness Keiran Rowell told 9NEWS.

A knife was found close by in Harmer Street and taken for forensic examination.

Anyone with information that may assist detectives should contact Kings Cross Police Station or Crime Stoppers on 1800 333 000.