CVE-2026-69229

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 12.0 and prior that allows a remote, authenticated attacker to insert arbitrary HTML into the Portal for ArcGIS Home application. Users working with ArcGIS Enterprise 11.1, 11.3, 11.5 and 12.0 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-2026-69229

EUVD

EUVD-2026-64157

Affected Vendors & Products

Vendor	Product	Version / Range
esri	portal_for_arcgis	to 12.0 (exc)
esri	arcgis_enterprise	From 11.1 (inc)
esri	arcgis_enterprise	From 11.3 (inc)
esri	arcgis_enterprise	From 11.5 (inc)
esri	arcgis_enterprise	From 12.0 (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 12.0 and earlier. A remote attacker with authentication can insert malicious HTML into the Portal for ArcGIS Home application, potentially altering how the application is displayed or behaves.

Impact Analysis

The impact includes potential phishing attacks, unauthorized content manipulation, or defacement of the Portal for ArcGIS interface. Users of ArcGIS Enterprise versions 11.1, 11.3, 11.5, and 12.0 are specifically at risk and should apply patches.

Compliance Impact

The vulnerability allows HTML injection, which could potentially lead to unauthorized data access or manipulation. This may impact compliance with GDPR (data protection) and HIPAA (health data security) by exposing sensitive information or violating integrity requirements.

Mitigation Strategies

Upgrade to the latest long-term support release of Esri Portal for ArcGIS. Users with ArcGIS Enterprise versions 11.1, 11.3, 11.5, and 12.0 should apply the available patches immediately.

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