---
id: CVE-2026-13019
title: >-
  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
summary: >-
  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 ver…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-640
vendor: esri
product: portal_for_arcgis
affected:
  - portal_for_arcgis <= 12.1
published: '2026-07-07'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T20:17:19.090'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-13019'
references:
  - url: >-
      https://www.esri.com/arcgis-blog/products/trust-arcgis/administration/june-2026-arcgis-security-bulletin
    label: psirt@esri.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-07-07T00:00:00+00:00'
epss: 0.00847
epssPercentile: 0.56423
ingestedAt: '2026-09-29T19:44:04.154Z'
---

## Overview

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

- `portal_for_arcgis <= 12.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.