To my knowledge, international students are able to take advantage of the CERB. One thing puzzled us when the Canada emergency student benefit was announced earlier this week: We weren't sure why international students aren't able to take advantage of it. International students currently have limitations on the number of hours they work, so the revenue they can get can varies depending on how they use that.
We are hoping that international students are taking advantage of the CERB as much as they can, but it would be preferable to see the CESB opened up to them as well.