HTML injection vulnerability in Esri Portal for ArcGIS

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-69237
StatePUBLISHED
AssignerEsri
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-21 21:17:04 UTC
Updated2026-09-11 20:18:01 UTC
DescriptionThere is an HTML injection vulnerability in Esri Portal for ArcGIS versions 11.3 and prior that allows a remote attacker with administrative privileges to insert arbitrary HTML into an administrative API. Users working with ArcGIS Enterprise 11.1, and 11.3 are encouraged to patch. All users are advised to upgrade to the latest long-term support release.

Risk And Classification

Primary CVSS: v3.1 4.8 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.001700000 probability, percentile 0.066110000 (date 2026-09-14)

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

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary4.8MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
3.1[email protected]Secondary3.8LOWCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
3.1CNACVSS3.8LOWCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Esri Portal For Arcgis All All All All
Application Esri Portal For Arcgis 11.1 - All All
Application Esri Portal For Arcgis 11.1 security_2024_update1 All All
Application Esri Portal For Arcgis 11.1 security_2024_update2 All All
Application Esri Portal For Arcgis 11.1 security_2025_update1 All All
Application Esri Portal For Arcgis 11.1 security_2025_update2 All All
Application Esri Portal For Arcgis 11.1 security_2025_update3 All All
Application Esri Portal For Arcgis 11.1 security_2026_update2 All All
Application Esri Portal For Arcgis 11.2 All All All
Application Esri Portal For Arcgis 11.3 - All All
Application Esri Portal For Arcgis 11.3 security_2025_update1 All All
Application Esri Portal For Arcgis 11.3 security_2025_update2 All All
Application Esri Portal For Arcgis 11.3 security_2025_update3 All All
Application Esri Portal For Arcgis 11.3 security_2026_update2 All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Esri Portal For ArcGIS affected 11.1 11.3 custom Windows, Linux

References

ReferenceSourceLinkTags
www.esri.com/arcgis-blog/products/arcgis-enterprise/administration/august-... [email protected] www.esri.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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