CVE-2026-69236

Received Received - Intake

Stored XSS in Esri Portal for ArcGIS

Publication date: 2026-08-21

Last updated on: 2026-08-21

Assigner: Environmental Systems Research Institute, Inc.

Description

There is a stored cross site scripting issue in Esri Portal for ArcGIS versions 12.1 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, 12.0 or 12.1 are encouraged to patch. All users are advised to upgrade to the latest long-term support release and apply the patch.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-21

Last Modified

2026-08-21

Generated

2026-08-22

AI Q&A

2026-08-22

EPSS Evaluated

N/A

NVD

CVE-2026-69236

EUVD

EUVD-2026-64086

Affected Vendors & Products

Vendor	Product	Version / Range
esri	portal_for_arcgis	to 12.1 (exc)
esri	arcgis_enterprise	11.1
esri	arcgis_enterprise	11.3
esri	arcgis_enterprise	11.5
esri	arcgis_enterprise	12.0
esri	arcgis_enterprise	12.1

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

This is a stored cross-site scripting (XSS) vulnerability in Esri Portal for ArcGIS versions 12.1 and earlier. It allows a remote, privileged attacker to inject malicious code that could execute arbitrary JavaScript in a victim's browser when they interact with the affected application.

Detection Guidance

Detection involves checking for unpatched versions of Esri Portal for ArcGIS 12.1 or earlier. Review system logs for unusual JavaScript execution patterns or unauthorized script injections in web interfaces. Use network scanning tools to identify vulnerable ArcGIS Enterprise instances.

Impact Analysis

An attacker could exploit this to steal user sessions, perform actions on behalf of users, or deface web pages. Users of ArcGIS Enterprise versions 11.1, 11.3, 11.5, 12.0, or 12.1 are specifically at risk and should apply patches immediately.

Mitigation Strategies

Upgrade to the latest long-term support release of Esri Portal for ArcGIS. Apply the official patch from Esri immediately. If using ArcGIS Enterprise versions 11.1, 11.3, 11.5, 12.0, or 12.1, update to a patched version without delay.

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