Grafana is an open-source platform for monitoring and observability. In Grafana Enterprise, Request security is a deny list that allows admins to configure Grafana in a way so that the instance doesn’t call specific hosts. However, the restriction can be bypassed used punycode encoding of the characters in the request address.
https://security.netapp.com/advisory/ntap-20231208-0003/
https://grafana.com/security/security-advisories/cve-2023-4399/