Mascarpone cheesecake ?
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I would say yes, if you were to them soon. But for health reasons with food "when in doubt throw it out". A day with food poisoning isn't worth saving a few bucks.
I agree with ZombbieCupcake. You also will know if it needs to go when you open it. Mascarpone has a sweet smell and milky liquid surrounding it in the tub.If it has broken and is not smooth in texture,it probably is too old.
Cynthia is a trusted source on Bread/Baking.
Mascarpone is actually very low in moisture compared to ricotta which contains a lovely whey. Because mascarpone is low in moisture, it is slower to spoil. If it hasn't taken on a bitter flavor or off color, it is fine to use.