CVE-2026-82183
OAuth Single Sign On 6.25.0 - 7.0.0 - Unauthenticated Account Takeover via Unverified Steam OpenID Assertion
- State
- Published
- Severity
- 8.1 High
- Published
- Sep 2, 2026
- Updated
- Sep 2, 2026
- Reserved
- Aug 28, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-287 Improper Authentication
Affected Products
| Product | Versions |
|---|---|
OAuth Single Sign OnUnknown |
|
References
- https://wpscan.com/vulnerability/bc7c18f2-4e8c-47a3-a972-6162fd27aaca/exploitvdb-entrytechnical-description
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