CVE-2026-50096: BUG-000187164 - ArcGIS Server has a security vulnerability.
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 Software
Event History
Frequently Asked Questions
What does an attacker need to exploit this issue?
An attacker can be remote and unauthenticated, but must persuade a victim to click a crafted link. Successful exploitation may execute arbitrary JavaScript in the victim's browser.
Which deployments can receive a patch?
Patches are provided for ArcGIS Server releases in General Availability or Extended Support status: 12.1, 12.0, 11.5, 11.3, and 11.1. Other versions are mature or retired and are not patch eligible.
What should organizations using an unlisted version do?
Organizations using an unlisted version should upgrade to a supported version and apply the patch. The available information does not identify a patch for mature or retired releases.