There is an unvalidated redirect vulnerability in Esri Portal for ArcGIS 11 and below that may allow a remote, unauthenticated attacker to craft a URL that could redirect a victim to an arbitrary website, simplifying phishing attacks.
There is a reflected XSS vulnerability in Esri Portal for ArcGIS versions 10.9.1 and below which may allow a remote, unauthenticated attacker to create a crafted link which when clicked could execute arbitrary JavaScript code in the victim’s browser.
There is a reflected HTML injection vulnerability in Esri Portal for ArcGIS versions 10.9.1 and below that may allow a remote, unauthenticated attacker to create a crafted link which when clicked could render arbitrary HTML in the victim’s browser.