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CVE-2025-9485

OAuth Single Sign On – SSO (OAuth Client) <= 6.26.12 - Authentication Bypass via get_resource_owner_from_id_token()

Published: Oct 4, 2025Updated: Oct 6, 2025 Sources: CVE List NVDCWE-347
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
0.6%
Top 57.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
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Description

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-347

Affected Products

OAuth Single Sign On – SSO (OAuth Client)cyberlord92
Mixed
Security Products / identity-access-mgmt
cyberlord92individual-devSecurity Productsaka active directory integration / ldap integration, miniorange otp verification with firebase, oauth single sign on – sso (oauth client)

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Collection
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References

https://www.wordfence.com/threat-intel/vulnerabilities/id/d2448afc-70d1-4dd5-b73b-62d182ee9a8a?source=cve
wordfence.com
https://plugins.trac.wordpress.org/browser/miniorange-login-with-eve-online-google-facebook/tags/6.26.12/class-mooauth-widget.php#L577
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3360768/miniorange-login-with-eve-online-google-facebook
plugins.trac.wordpress.org

Timeline

Published
Oct 4, 2025
Last Updated
Oct 6, 2025

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