---
id: CVE-2026-103576
title: >-
  Url redirection to untrusted site ('open redirect') in Active Directory
  Federation Services (AD FS) allows an unauthorized attacker to perform
  spoofing over a network.
summary: >-
  Url redirection to untrusted site ('open redirect') in Active Directory
  Federation Services (AD FS) allows an unauthorized attacker to perform
  spoofing over a network.
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'
cwe:
  - CWE-601
published: '2026-10-13'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T19:25:38.150'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-103576'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-103576'
    label: secure@microsoft.com
tags:
  - nvd
ingestedAt: '2026-10-13T19:43:28.904Z'
---

## Overview

Url redirection to untrusted site ('open redirect') in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.

## Remediation

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