The Brazil international scored and provided two assists as the resurgent hosts extended their record streak of successes in the competition.

Wolves also inflicted a 10th defeat in 11 games on Leicester, for which Jamie Vardy's second-half penalty was denied.

Cunha broke the deadlock in the 33rd minute, turning home Rayan Ait-Nouri's cross from close range for his 15th league goal of the season.

The forward then turned provider 11 minutes after the break, with a well-timed pass neatly slotted home by Jorgen Strand Larsen.

Josa Sa thwarted Vardy from 12 yards in the 72nd minute before Rodrigo Gomes sealed the victory five minutes from time, drilling past Mads Hermansen after another neat Cunha lay-off.

Wolves boss Vitor Pereira paid tribute to Cunha after the forward's inspirational performance.

"He is a special player," Pereira said. "When he feels the happiness inside, when he is himself, he can create.

"He played a fantastic game. It shows he is committed with us, with his team-mates, with everyone."

Wolves, which secured their Premier League status with victory over Manchester United at Old Trafford last weekend, have won six successive matches in the top flight for the first time since 1970.

It has been a remarkable transformation in fortunes for the club, who appeared to be strong candidates for relegation when Pereira succeeded Gary O'Neil in December.

"I'm very proud of my team and our supporters," the Wolves boss said.

"I don't like to win a game without playing good football, with our identity. We can create our identity. When we arrived, it was [about] defending better, and now I want more.

"Since the first day, I said to them: 'I came here because you have quality. If not, I wouldn't have taken the job. I have a clear idea about football, and you must be open to start playing to create our identity'.

"I felt the players understood the things we wanted from them since the first day. It is not just about tactics, it is about energy also. We are very happy in this moment.

"We need to finish this season in the best position we can and show our spirit, identity and ambition."

Meanwhile, Cunha insisted he is happy at Wolves amid speculation linking him with a move away from Molineux.

"We are very committed to this club, everyone, and want to show the fans our capacity," he said. "We're starting to get the points we deserve and show everyone our work.

"I always say that I am always happy to play for this team. Sometimes, my emotions are too much because I love to be here."

Leicester head coach Ruud van Nistelrooy was left far from impressed by the manner of his already-relegated side's defeat.

"I look at the performance and that wasn't good enough," he said. "I don't talk football-wise, but I talk intensity, duels.

"We had many easy ball losses in possession, especially in the first half. In the second, yes, we conceded two on the break, but we were better in those things.

"At half-time, I had to address these things. That's not acceptable. Those things don't require talent.

"How intense you press, how intense you make a duel or the easy ball losses that are going to create lots of transitions where you have to recover. That was addressed, then we went into the second half.

"We look at all 17 teams above, and acknowledge that we weren't at that level. That is very clear, we have to accept it and move on."