---
id: CVE-2026-2813
title: >-
  ArcGIS Server contains an input validation weakness in the login redirection
  workflow
summary: >-
  ArcGIS Server contains an input validation weakness in the login redirection
  workflow. An Authenticated attacker could exploit this issue by sending a
  specially crafted request, Successful exploitation may result in the
  application redir…
severity: medium
cvss: 4.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N'
cwe:
  - CWE-601
vendor: esri
product: arcgis_server
affected:
  - arcgis_server = 11.5
published: '2026-05-20'
updated: '2026-07-23'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-2813'
references:
  - url: >-
      https://www.esri.com/arcgis-blog/products/trust-arcgis/administration/april2026_security_bulletin
    label: psirt@esri.com
tags:
  - nvd
epss: 0.003
epssPercentile: 0.22912
ingestedAt: '2026-07-23T13:18:08.638Z'
---

## Overview

ArcGIS Server contains an input validation weakness in the login redirection workflow. An Authenticated attacker could exploit this issue by sending a specially crafted request, Successful exploitation may result in the application redirecting the browser to an unintended, untrusted site, resulting in a limited confidentiality impact under specific user interaction conditions.
The vulnerability affects only the client side navigation logic during authentication and remains confined to the same security boundary. No server side compromise or cross component impact is possible.  This issue affects ArcGIS Server 11.5.

## Affected

- `arcgis_server = 11.5`

## Remediation

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