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Vulnerability record · CVE-2026-82183 · published 2 September 2026

CVE-2026-82183: Improper authentication vulnerability

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.

8.1 CVSS 3.1 High EPSS 0.38% · top 70.2% CWE-287 · Improper authentication Deferred
8.1CVSS 3.1 base score
0.38%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
3 Sep 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

LinkTags
https://wpscan.com/vulnerability/bc7c18f2-4e8c-47a3-a972-6162fd27aaca/

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-82183), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.