CVE-2026-97274
CriticalCVSS 9.8Summary
The OAuth Single Sign On – SSO (OAuth Client) plugin in versions up to and including 7.1.2 contains an unauthenticated bypass vulnerability. An attacker does not need prior authentication to exploit this flaw.
Risk Assessment
An attacker could gain access to protected resources without valid credentials, potentially leading to account takeover or unauthorized system access.
Recommendation
Update the OAuth Single Sign On – SSO (OAuth Client) plugin to a version newer than 7.1.2 that fixes this vulnerability.
Other vulnerabilities in OAuth Single Sign On – SSO (OAuth Client)
See all- CVE-2026-57807Critical
The OAuth Single Sign On - SSO (OAuth Client) plugin for WordPress contains an authentication bypass vulnerability via an alternate path or channel, allowing password recovery exploitation. This issue affects versions up to and including 38.5.8.
- CVE-2025-10752Medium
The OAuth Single Sign On – SSO (OAuth Client) plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to and including 6.26.12. This is due to using a predictable state parameter (base64 encoded app name) without any randomness in the OAuth flow. This makes it possible for unauthenticated attackers to forge OAuth authorization requests and potentially hijack the OAuth flow via a forged request, granted they can trick a site administrator into performing an action such as clicking on a link.
Original NVD description (English source)
Unauthenticated Bypass Vulnerability in OAuth Single Sign On – SSO (OAuth Client) <= 7.1.2 versions.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS