Grafana OnCall is an easy-to-use on-call management tool that will help reduce toil in on-call management through simpler workflows and interfaces that are tailored specifically for engineers.
Grafana OnCall, from version 1.1.37 before 1.5.2 are vulnerable to a Server Side Request Forgery (SSRF) vulnerability in the webhook functionallity.
This issue was fixed in version 1.5.2