New Relic: Stored XSS via malicious key value of Synthetics monitor tag when visiting an Insights dashboard with filtering enabled

Introduction & Context This is a complex XSS that requires multiple steps in order to setup. It also requires you to have a good understanding of both New Relic Insights, New Relic Synthetics monitors, and the NerdGraph API explorer. Background Context: New Relic Synthetics and the history of tag...