There's many links to their github page [0] which is all Apache 2.0. I'm unaffiliated with Cerbos so IO can't speak for why that license.

[0] https://github.com/cerbos

I went to their github and saw no license mentioned at all.

Here [0] is a link to the license file on their main repo, and Here [1] is a screenshot of the link in my previous comment highlighting the license on all of the repos.

[0] - https://github.com/cerbos/cerbos/blob/main/LICENSE [1] - https://imgur.com/a/dbVHwUW