# CVE-2026-10759: Esri Portal for ArcGIS LDAP injection in administrative functionality

Source: https://junglewise.ai/threats/cve-2026-10759-a-flaw-in-portal-for-arcgis-could-allow-ldap-injection-through  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-10759 · Severity: medium · CVSS 5.5 · Published 2026-10-13

Portal for ArcGIS is an administrative interface for managing spatial data and services. An authenticated administrator can exploit insufficient input validation in LDAP query construction to perform unauthorized directory operations, such as reading sensitive user attributes or modifying directory entries without proper authorization.

Technologies: [Esri Portal For Arcgis](https://junglewise.ai/threats/technologies/portal-for-arcgis). Vendors: [Esri](https://junglewise.ai/threats/vendors/esri).

## Quick answers

**Is CVE-2026-10759 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-10759 being exploited in the wild.

**How severe is CVE-2026-10759?** Medium severity, with a CVSS score of 5.5, published 13 October 2026.

**Which products and versions are affected?** Esri Portal for ArcGIS.

**Is there a fix for CVE-2026-10759?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-10759 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-10759?** Check whether you run Esri Portal For Arcgis. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability exists in administrative functionality that constructs Active Directory or LDAP search queries without sufficient input neutralization, allowing LDAP injection attacks. An authenticated administrator with access to the affected administrative interface can supply crafted input to modify the intended LDAP query and execute unintended directory operations. Exploitation requires administrator authentication.

## Affected products

- Esri Portal for ArcGIS

## Timeline

- 2026-10-13: disclosed

## References

- [https://www.esri.com/arcgis-blog/products/trust-arcgis/administration/september-2026-arcgis-security-bulletin](https://www.esri.com/arcgis-blog/products/trust-arcgis/administration/september-2026-arcgis-security-bulletin)

## Related threats

- [Esri Portal for ArcGIS reflected cross-site scripting](https://junglewise.ai/threats/cve-2026-50096-there-is-a-reflected-cross-site-scripting-vulnerability-in-esri)
- [Esri Portal for ArcGIS reflected cross-site scripting](https://junglewise.ai/threats/cve-2026-33520-there-is-a-reflected-cross-site-scripting-vulnerability-in-esri)
- [Esri Portal for ArcGIS authentication bypass in admin API](https://junglewise.ai/threats/cve-2026-69227-a-flaw-in-portal-for-arcgis-allows-unauthenticated-access-to)
- [Esri Portal for ArcGIS account creation bypass in sharing endpoint](https://junglewise.ai/threats/cve-2026-69226-a-flaw-in-portal-for-arcgis-allows-unauthenticated-users-to)
- [Esri Portal for ArcGIS HTML injection](https://junglewise.ai/threats/cve-2026-69238-esri-portal-for-arcgis-html-injection)