CVE-2026-13019: Esri Portal For Arcgis

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

Esri Portal for ArcGIS versions 12.1 and earlier on Windows, Linux and Kubernetes have a missing authentication for critical function vulnerability allows a remote, unauthenticated attacker to access an unprotected API. The following versions are known to be affected: Portal for ArcGIS 12.1 and earlier. Other unsupported versions may also be affected. Esri recommends that users apply the Portal for ArcGIS Security 2026 Update 2 Patch to remediate this vulnerability.

Affected products

• Esri Portal For Arcgis: up to and including 12.1

Published 2026-07-07. Last modified 2026-09-29.