WordPress Plugin Vulnerabilities
OAuth Single Sign On 6.25.0 - 7.0.0 - Unauthenticated Account Takeover via Unverified Steam OpenID Assertion
Description
The plugin 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.
Proof of Concept
Affects Plugins
References
CVE
Classification
Type
AUTHBYPASS
OWASP top 10
CWE
CVSS
Miscellaneous
Original Researcher
Pedro Pinho
Submitter
Pedro Pinho
Verified
Yes
WPVDB ID
Timeline
Publicly Published
2026-08-31 (about 2 days ago)
Added
2026-08-31 (about 1 day ago)
Last Updated
2026-09-01 (about 8 hours ago)