Esri Portal for ArcGIS Reflected Cross-Site Scripting Vulnerability

A reflected cross-site scripting vulnerability has been identified in Esri Portal for ArcGIS versions 11.4 and earlier. This vulnerability allows a remote authenticated attacker with administrative privileges to inject a crafted string that executes arbitrary JavaScript in the victim's browser.

Impact

Exploitation of this vulnerability allows for reflected cross-site scripting, where an attacker can execute malicious scripts in the context of the user's browser session.

Remediation

Esri has released a security patch for Portal for ArcGIS in 2025 Update 3. This patch addresses this vulnerability and is available through the Esri Support website. Users should also implement the 2025 Top 3 New Critical Security Recommendations.