WSOF president Ray Sefo and executive vice president Ali Abdel-Aziz confirmed the bout to MMAWeekly.com. It was first reported by Brazilian website Tatame.com.
A 1-4 skid saw him ushered out of the Octagon in late 2011, but Griffin (16-6) has undergone a lot of changes in the past couple years.
He rejuvenated his training with a move from Xtreme Couture to American Kickboxing Academy. Griffin then defeated The Ultimate Fighter 8 lightweight winner Efrain Escudero at RFA 4 late last year before signing with the World Series of Fighting.
Cavalcante (17-7-1) was consistently regarded one of the Top 10 lightweights in the world in the early to mid 2000s, but has had a rough time gaining any momentum over the past few years, losing more often than winning.
He is 1-1 fighting for WSOF, having competed on their first two fight cards.
WSOF 4 is slated for Aug. 10 in Ontario, Calif., the promotion’s second trip outside of its home base of Las Vegas.