Vulnerability · Published Oct 26, 2026 · Assigned by Esri
CVE-2026-50096BUG-000187164 - ArcGIS Server has a security vulnerability.
Medium 6.1
In plain English
A medium-severity cross-site scripting in ArcGIS Server 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 17% of all known vulnerabilities).
Official description
There is a reflected cross site scripting vulnerability in Esri Portal for ArcGIS versions 12.1 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. A patch is provided for ArcGIS Server software in General Availability and Extended support status, which includes versions 12.1, 12.0, 11.5, 11.3, and 11.1. Other versions are in mature or retired status, which are not patch eligible. Users working with unlisted versions are advised to upgrade and apply the patch.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Esri | ArcGIS Server | 11.1 – before 12.1 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N