Cape Verde started with more intent going forward than they were able to show against Spain, but it was still Uruguay who created the first real opening when Federico Valverde drilled a left-footed shot wide.
But the tournament debutants forged ahead when Pina crashed a long-range free-kick through a poor Uruguay wall and past Muslera.
Uruguay were in desperate need of their equaliser when it arrived in the 44th minute.
Sidney Lopes Cabral headed the ball against his own post under pressure from Rodrigo Bentancur, and Araujo stooped to nod in the rebound with Cape Verde goalkeeper Vozinha stranded.
They completed the turnaround in the sixth minute of first-half added time, as Canobbio turned in Araujo’s header across goal on the volley.
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