Stored XSS in Server Admin API
There is a stored Cross-site Scripting vulnerability in ArcGIS Server for versions 11.3 and below that may allow a remote, authenticated attacker to create a stored crafted link which when clicked could potentially execute arbitrary JavaScript code in the victim’s browser.  The privileges required to execute this attack are high, requiring publisher capabilities.  The impact is low to both confidentiality and integrity while having no impact to availability.