CVE-2026-69238

Received Received - Intake

HTML Injection 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 an HTML injection vulnerability in Esri Portal for ArcGIS versions 11.5 and prior that allows a remote, highly priviliged attacker to insert arbitrary HTML into the Portal for ArcGIS Home application. Users working with ArcGIS Enterprise 11.1, 11.3, and 11.5 are encouraged to patch. All users are advised to upgrade to the latest long-term support release.

CVSS Scores

EPSS Scores

Probability:
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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-2026-69238

EUVD

EUVD-2026-64153

Affected Vendors & Products

Vendor	Product	Version / Range
esri	portal_for_arcgis	to 11.6 (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 an HTML injection flaw in Esri Portal for ArcGIS versions 11.5 and earlier. It allows a remote attacker with high privileges to inject arbitrary HTML code into the Portal for ArcGIS Home application.

Impact Analysis

An attacker could manipulate the application's interface, potentially tricking users into performing unintended actions or disclosing sensitive information. Users of ArcGIS Enterprise versions 11.1, 11.3, and 11.5 are specifically encouraged to apply patches.

Mitigation Strategies

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

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