title: OAuth Single Sign On < 6.22.6 - Authentication Bypass
description: The OAuth Single Sign On WordPress plugin before 6.22.6 doesn't validate that OAuth access token requests are legitimate, which allows attackers to log onto the site with the only knowledge of a user's email address.
problem types: CWE-287 Improper Authentication
affected:
{
product: OAuth Single Sign On – SSO (OAuth Client)
vendor: Unknown
versions:
lessThan: 6.22.6, status: affected, version: 6.22.6, versionType: custom
}