Vulnerability · Published Sep 2, 2026 · Assigned by WPScan
CVE-2026-82183OAuth Single Sign On 6.25.0 - 7.0.0 - Unauthenticated Account Takeover via Unverified Steam OpenID Assertion
High 8.1
In plain English
A high-severity improper authentication in OAuth Single Sign On from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.4%top 67.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unknown | OAuth Single Sign On | 6.25.0 – before 7.0.1 |
Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://wpscan.com/vulnerability/bc7c18f2-4e8c-47a3-a972-6162fd27aaca/ exploit, vdb-entry, technical-description