CVE-2025-9485 (GCVE-0-2025-9485)
Vulnerability from cvelistv5
Published
2025-10-04 02:24
Modified
2025-10-06 14:16
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Summary
The OAuth Single Sign On – SSO (OAuth Client) plugin for WordPress is vulnerable to Improper Verification of Cryptographic Signature in versions up to, and including, 6.26.12. This is due to the plugin performing unsafe JWT token processing without verification or validation in the `get_resource_owner_from_id_token` function. This makes it possible for unauthenticated attackers to bypass authentication and gain access to any existing user account - including administrators in certain configurations - or to create arbitrary subscriber-level accounts.
References
Impacted products
Vendor Product Version
cyberlord92 OAuth Single Sign On – SSO (OAuth Client) Version: *   ≤ 6.26.12
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