report_viewer.do in ServiceNow Release Jakarta Patch 8 and earlier allows remote attackers to execute arbitrary code via '${xyz}' Glide Scripting Injection in the sysparm_media parameter.
https://telekomsecurity.github.io/assets/advisories/20180104_ServiceNow_GlideInjection.txt
https://telekomsecurity.github.io/2018/07/servicenow-privilege-escalation.html