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OpenAdvisories
High · 8.1 CVE-2026-82183 EUVD-2026-69861GHSA-f9w9-q3c6-p58g

OAuth Single Sign On 6.25.0 - 7.0.0 - Unauthenticated Account Takeover via Unverified Steam OpenID Assertion

Published Sep 2, 2026 · Updated Sep 2, 2026 · Assigned by WPScan

Description

The OAuth Single Sign On WordPress plugin before 7.0.1 does not verify the identity assertion returned by its Steam single sign-on flow, allowing unauthenticated attackers to log in as an arbitrary non-administrator user, and to create new accounts.

Affected products

VendorProductAffectedFixed
— OAuth Single Sign On 6.25.0 – < 7.0.1 7.0.1

References