CVE-2026-69237Network attack vector

Administrative HTML injection via unspecified API input handling

Published Aug 21, 2026 · Updated Aug 21, 2026

HTML injection in Esri Portal for ArcGIS 11.1 through 11.3 allows remote authenticated users to insert arbitrary HTML via an administrative API. Esri has not disclosed the affected endpoint, input field, or exact operation that fails to neutralize attacker-controlled markup. Administrative privileges are required, and the published consequence is limited to inserting arbitrary HTML rather than executing script.

CVSS severity3.8
Low
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

HTML injection in Esri Portal for ArcGIS 11.1 through 11.3 allows remote authenticated users to insert arbitrary HTML via an administrative API. Esri has not disclosed the affected endpoint, input field, or exact operation that fails to neutralize attacker-controlled markup. Administrative privileges are required, and the published consequence is limited to inserting arbitrary HTML rather than executing script.

The record

CVE
CVE-2026-69237
Published
Aug 21, 2026
Updated
Aug 21, 2026
Vendor
Esri
Product
Portal for ArcGIS
Classifications
CWE-79
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11.1 <=11.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Esri · Portal for ArcGISversion=11.1 <=11.3

Published CVSS scores

3.7EsriCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N/RL:O
3.8EsriCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo