CVE-2026-69234Network attack vector

Browser script execution via crafted link

Published Aug 21, 2026 · Updated Aug 21, 2026

Reflected XSS in Esri Portal for ArcGIS 11.1 through 11.5 allows remote attackers to execute JavaScript in a victim's browser via a crafted link. Esri has not disclosed the affected request handler or parameter, or how its value reaches an HTML response without sufficient output neutralization. Exploitation requires no account but requires a victim to click the link; the script runs in the portal's browser origin and can affect browser-accessible data and actions.

CVSS severity6.1
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Esri Portal for ArcGIS 11.1 through 11.5 allows remote attackers to execute JavaScript in a victim's browser via a crafted link. Esri has not disclosed the affected request handler or parameter, or how its value reaches an HTML response without sufficient output neutralization. Exploitation requires no account but requires a victim to click the link; the script runs in the portal's browser origin and can affect browser-accessible data and actions.

The record

CVE
CVE-2026-69234
Published
Aug 21, 2026
Updated
Aug 21, 2026
Vendor
Esri
Product
Portal for ArcGIS
Classifications
CWE-79, T1566.002
Attack vector
network
Privileges
unauthenticated

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

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Is a vulnerable build present?

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

  1. Affected versionversion=11.1 <=11.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Esri · Portal for ArcGISversion=11.1 <=11.5

Published CVSS scores

6.1EsriCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.8EsriCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:X/RL:O/RC:C

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1566.002Spearphishing Link

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

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Your stack

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