Vulnerability · Published Aug 21, 2026 · Assigned by Esri
CVE-2026-69234reflected cross site scripting vulnerability in Esri Portal for ArcGIS
Medium 6.1
In plain English
A medium-severity cross-site scripting in Portal for ArcGIS from Esri. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).
Official description
There is a reflected cross site scripting vulnerability in Esri Portal for ArcGIS versions 11.5 and prior which may allow a remote, unauthenticated attacker to create a crafted link which when clicked could potentially execute arbitrary JavaScript code in the victim’s browser. Users working with ArcGIS Enterprise 11.1, 11.3, and 11.5 are encouraged to patch. All users are advised to upgrade to the latest long-term support release. Users working with ArcGIS Web App Builder developer edition are advised to migrate to ArcGIS Experience Builder, as ArcGIS Web App Builder developer edition is unsupported when this CVE is assigned.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Esri | Portal for ArcGIS | 11.1 – through 11.5 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N