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PHP EUVDEUVD-2025-32415

| CVE-2025-9485 CRITICAL
Improper Verification of Cryptographic Signature (CWE-347)
2025-10-04 security@wordfence.com
Authentication Bypass WordPress PHP
9.8
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
EUVD ID Assigned
Mar 13, 2026 - 19:56 euvd
EUVD-2025-32415
Analysis Generated
Mar 13, 2026 - 19:56 vuln.today
CVE Published
Oct 04, 2025 - 03:15 nvd
CRITICAL 9.8

DescriptionCVE.org

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.

AnalysisAI

Cryptographic signature bypass in OAuth SSO WordPress plugin. EPSS 0.65%.

Technical ContextAI

CWE-347.

RemediationAI

Update.

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EUVD-2025-32415 vulnerability details – vuln.today
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