Simple Single Sign On <= 4.1.1 - Insecure OAuth Implementation to Authentication Bypass

8.1
Authentication Bypass Using an Alternate Path or Channel
CVE CVE-2022-2083
CVSS 8.1 (High)
Publicly Published June 4, 2022
Last Updated February 3, 2023
Researcher István Márton - Wordfence

Description

The Simple Single Sign On plugin for WordPress is vulnerable to authorization bypass due to insecurely configured OAuth in versions up to, and including, 4.1.1 which allows attackers to retrieve client access_tokens that can be used to authenticate to a vulnerable site. This makes it possible unauthenticated attackers to gain unauthorized access to vulnerable web servers.

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1 affected software package

Software Type Plugin
Software Slug single-sign-on-client (view on wordpress.org)
Patched? No
Remediation No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
Affected Version
  • <= 4.1.1

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