More information about this security flaw is available in the following bug: https://bugzilla.redhat.com/show_bug.cgi?id=2309426 Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
https://src.fedoraproject.org/rpms/python3.8/pull-request/123
Fixed in python3.8-3.8.20-1.