Kal Anthony Deakin admitted the offence at Stafford Crown Court following the altercation between a group and a 17-year-old boy.
The court heard how the 32-year-old defendant was part of a group that approached two males on Hayes Way, near the Winding Wheel pub, on April 12 this year.
An altercation took place and a 17-year-old boy sustained a stab wound. The boy ran away and sought help at a nearby property and was later taken to hospital with serious injuries. He has since made a full recovery.
Deakin, of Avon Road in Cannock, was identified as a suspect and arrested the next day. Following his guilty plea on Thursday, he was remanded in custody ahead of a sentencing hearing at the same court next month.
Following Deakin’s guilty plea, a spokesman for Staffordshire Police, said: “Thankfully Deakin’s actions didn’t have more serious consequences for the victim.
“I hope this case shows how officers will act fast to identify suspects and hope it serves as a warning to those who think it’s acceptable to carry and use knives - we will bring perpetrators before the courts.”