OAuth Single Sign On – SSO (OAuth Client) <= 7.1.2 - Unauthenticated Authentication Bypass
The OAuth Single Sign On – SSO (OAuth Client) plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 7.1.2. This is due to missing enforcement of the email-verification claim when the claim is absent from the IdP response, because the old inline check was gated on isset($resource_owner[$idp_email_verified_key]) and skipped silently when the claim was not present. This makes it possible for unauthenticated attackers to gain access to an account without a verified email address by authenticating through an OAuth provider that omits the email-verification claim from its response, causing the verification check to be silently bypassed. The 'email verified' check must be enabled in the plugin settings (mo_oauth_email_verify_check).
Betroffene Software
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| Plattform | Paket | Anfällige Versionen | Behoben in |
|---|---|---|---|
| WordPress-Plugin | OAuth Single Sign On – SSO (OAuth Client) | <= 7.1.2 | 7.1.3 |
Verweise
- CVSS-Vektor
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N- Schwäche (CWE)
CWE-287- Plattform
- WordPress
- Paket
OAuth Single Sign On – SSO (OAuth Client)- Veröffentlicht
- 30.09.2026
- Aktualisiert
- 11.10.2026 10:23
Quellen und Lizenzen
Wordfence Intelligence - d61a1e57-9285-437f-a6b1-48e553c49533 - Wordfence Intelligence
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Schwachstellenhistorie: OAuth Single Sign On – SSO (OAuth Client)
Alle veröffentlichten Schwachstellen dieses Pakets (WordPress-Plugin), neueste zuerst. Zeigt, ob es ein einmaliger Ausrutscher ist oder ein Paket, das man im Auge behalten muss.
- Einträge insgesamt
- 13
- Erste → letzte
- 08.2021 09.2026
- Ohne Fix
- 0
- In Angriffen ausgenutzt
- 0
Verteilung nach Schweregrad
- Kritisch 1
- Hoch 4
- Mittel 8
Veröffentlichungen pro Jahr
- 2021: 1
- 2022: 2
- 2023: 3
- 2024: 1
- 2025: 2
- 2026: 4
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OAuth Single Sign On – SSO (OAuth Client) <= 7.1.2 - Unauthenticated Authentication Bypass dieser Eintrag
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