The PSG right-back was withdrawn from his side’s 2-0 Coupe de France final victory over 2-0 Les Herbiers on Tuesday with ligament damage, causing panic for coach Selecao Tite and his staff.
However, on Wednesday a spokeman for the player confirmed he is not at risk of missing the World Cup, with an expected recovery period set at around 21 days.
"Following Daniel Alves' right knee injury, which occurred yesterday during the French Cup final, the tests performed today showed a high detachment of the anterior cruciate ligament with posterolateral sprain," the statement informed ESPN Brasil.
"His condition requires a minimum of three weeks of care before re-evaluation."
On Monday, Tite will name his Brazil squad for World Cup 2018.
The Selecao kick-off their World Cup campaign on June 17.