Ask HN: Can I just use an open-source function in a SaaS tool I'm reselling?

Just a quick example for the sake of having an exapmle: say my (paid) SaaS wants to add video calls as a function.

I know Jitsi meet is free and open-source. Can I just package it in the SaaS I'm selling? Of course, naming the fact that it's Jitsi wouldn't be a problem, as I'm not making a video calling SaaS.