Officers attended The Downs, Harlow on Thursday January 26 at around 1.30pm, following reports that a man had been attacked with a claw hammer.
Emergency services attended the scene and the man was taken to hospital in London with stab wounds. His injuries are not believed to be life threatening.
The suspects are described as two men aged between late teens to early 20s.
Police are asking for witnesses to come forward and would ask residents around The Downs area to check their gardens and bins for any hammers or other similar type weapons that have been discarded.