CVE-2026-12281

The Shibboleth WordPress plugin before 2.5.4 does not fail closed when its HTTP header identity mode is enabled without an anti-spoofing key, treating any request that carries identity headers as an authenticated session without verifying them. On a deployment where untrusted client headers reach the application, an unauthenticated attacker can log in with forged identity headers and, when automatic account creation and the default administrator role mapping are enabled, create and sign in as a new administrator. Exploitation requires the non-default HTTP header attribute mode, an empty or absent spoof key, automatic account creation enabled, and a deployment that does not strip untrusted client headers before they reach the application.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://wpscan.com/vulnerability/8474eda4-6385-447a-9139-f57c049d1713/

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-15 06:16

Updated : 2026-07-15 19:50

NVD link : CVE-2026-12281

Mitre link : CVE-2026-12281

CVE.ORG link : CVE-2026-12281

JSON object : View

Products Affected

No product.

CWE

CWE-287

Improper Authentication

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