---
id: CVE-2026-82842
title: >-
  The SAML Single Sign On  WordPress plugin before 6.0.0 does not honour the
  configured criterion for linking an incoming single sign-on identity to a
  WordPress account, always resolving the identity by login name whatever the
  site has cho…
summary: >-
  The SAML Single Sign On  WordPress plugin before 6.0.0 does not honour the
  configured criterion for linking an incoming single sign-on identity to a
  WordPress account, always resolving the identity by login name whatever the
  site has cho…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-269
product: SAML Single Sign On
affected:
  - saml_single_sign_on >= 4.8.43 < 6.0.0
published: '2026-09-20'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T13:34:57.127'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82842'
references:
  - url: 'https://wpscan.com/vulnerability/4ae66b2c-a0de-405f-baca-127302257540/'
    label: contact@wpscan.com
tags:
  - nvd
  - cve.org
epss: 0.00373
epssPercentile: 0.28562
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-20T13:48:57.522788Z'
ingestedAt: '2026-09-20T07:16:12.222Z'
---

## Overview

The SAML Single Sign On  WordPress plugin before 6.0.0 does not honour the configured criterion for linking an incoming single sign-on identity to a WordPress account, always resolving the identity by login name whatever the site has chosen, which allows an attacker who can have the site's identity provider assert a login name of their choosing to authenticate as any account, including an administrator, without proving ownership of that account.

## Remediation

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