How to link job from one namespace to service account in a different namespace?

My cron job is created in some namespace and needs access to the service account that is created in the default namespace on cluster creation. Is there a way to do this between different namespaces? I have tried to use a cluster role to bind the service account but I don’t think this is the solution. Do I need another service account in the cron job namespace to talk to the service account in the default namespace?

Thanks for the help I am new to Kubernetes!