Vulnerability · Published Aug 21, 2026 · Assigned by Esri
CVE-2026-69231stored cross site scripting issue in Esri Portal for ArcGIS
Medium 5.5
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 26% of all known vulnerabilities).
Official description
There is a stored cross site scripting issue in Esri Portal for ArcGIS versions 11.5 and prior that may allow a remote, privileged attacker to inject malicious code that could potentially execute arbitrary JavaScript in a victim’s browser. Users working with ArcGIS Enterprise 11.1, 11.3, 11.5 are encouraged to patch. All users are advised to upgrade to the latest long-term support release.
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:H/UI:N/S:C/C:L/I:L/A:N