There is a stored Cross-site Scripting vulnerability in Esri Portal for ArcGIS Enterprise Web App Builder versions 11.1 and below that may allow a remote, authenticated attacker to create a crafted link that is stored in a web map link which when clicked could potentially execute arbitrary JavaScript code in the victim’s browser. The privileges required to execute this attack are high.
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.