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CVE-2026-69231

stored cross site scripting issue in Esri Portal for ArcGIS

MEDIUM

5.5

CVSS Score

Published: August 21, 2026 at 08:49 PM UTC

Updated: October 12, 2026 at 04:10 PM UTC

1 product affected across 1 vendorPortal for ArcGIS

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Portal for ArcGIS · Esri

95%

v < 11.111.1 11.1 security_2024_update1 11.1 security_2024_update2 11.1 security_2025_update1 11.1 security_2025_update2 11.1 security_2025_update3 11.1 security_2026_update2 11.2 11.3 11.3 security_2025_update1 11.3 security_2025_update2 11.3 security_2025_update3 11.3 security_2026_update2 11.4 11.5 11.5 security_2026_update1 11.5 security_2026_update2

Affected range stops below 11.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://www.esri.com/arcgis-blog/products/arcgis-enterprise/administration/august-2026-arcgis-security-bulletin

References (1)

Vendor Advisory

Source: cverecord

https://www.esri.com/arcgis-blog/products/arcgis-enterprise/administration/august-2026-arcgis-security-bulletin

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMEsri

Attack Vector: NETWORK
Complexity: LOW
Privileges: HIGH
User Interaction: NONE
Scope: CHANGED
Confidentiality: LOW
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusANALYZED

CWE

CWE-79

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