---
id: CVE-2026-105118
title: >-
  OpenAM before 16.1.3 contains an open redirect vulnerability that allows
  unauthenticated attackers to redirect users by supplying an unverified
  id_token_hint to the /oauth2/connect/endSession endpoint
summary: >-
  OpenAM before 16.1.3 contains an open redirect vulnerability that allows
  unauthenticated attackers to redirect users by supplying an unverified
  id_token_hint to the /oauth2/connect/endSession endpoint. Attackers can name
  any realm client…
severity: medium
cvss: 4.7
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-347
vendor: OpenIdentityPlatform
product: OpenAM
affected:
  - OpenAM < 16.1.3
published: '2026-10-03'
updated: '2026-10-03'
sourceUpdated: '2026-10-03T14:16:38.563'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-105118'
references:
  - url: >-
      https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-6f8c-crwq-jqm3
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/openam-before-16.1.3-open-redirect-via-unverified-id-token-hint-in-endsession
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-03T14:47:06.464Z'
---

## Overview

OpenAM before 16.1.3 contains an open redirect vulnerability that allows unauthenticated attackers to redirect users by supplying an unverified id_token_hint to the /oauth2/connect/endSession endpoint. Attackers can name any realm client in a forged hint to redirect victims to any registered post-logout URI, enabling phishing that borrows the OpenAM host's trust.

## Remediation

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