CVE-2026-69231

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Stored XSS in Esri Portal for ArcGIS

Publication date: 2026-08-21

Last updated on: 2026-08-26

Assigner: Environmental Systems Research Institute, Inc.

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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-21

Last Modified

2026-08-26

Generated

2026-09-11

AI Q&A

2026-08-22

EPSS Evaluated

2026-09-09

NVD

CVE-2026-69231

EUVD

EUVD-2026-64159

Affected Vendors & Products

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

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 vulnerability is a stored cross-site scripting (XSS) issue in Esri Portal for ArcGIS versions 11.5 and earlier. It allows a remote, privileged attacker to inject malicious code that could execute arbitrary JavaScript in a victim's browser when they access the affected application.

Detection Guidance

This vulnerability is specific to Esri Portal for ArcGIS versions 11.5 and prior. Detection involves checking the installed version of ArcGIS Enterprise or Portal for ArcGIS. No direct commands are provided in the context, but you can verify the version through the software's interface or configuration files.

Impact Analysis

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

Compliance Impact

This vulnerability could potentially violate compliance with GDPR and HIPAA due to the risk of unauthorized JavaScript execution, which may lead to data breaches or unauthorized access to sensitive information. Stored XSS attacks can compromise user sessions and expose protected health or personal data, violating regulatory requirements for data security and privacy.

Mitigation Strategies

Upgrade to the latest long-term support release of ArcGIS Enterprise. Users with versions 11.1, 11.3, or 11.5 should apply patches immediately.

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