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CVE-2026-27836

phpMyFAQ Allows Unauthenticated Account Creation via WebAuthn Prepare Endpoint PUBLISHED

Description (CNA)

phpMyFAQ is an open source FAQ web application. Prior to version 4.0.18, the WebAuthn prepare endpoint (`/api/webauthn/prepare`) creates new active user accounts without any authentication, CSRF protection, captcha, or configuration checks. This allows unauthenticated attackers to create unlimited user accounts even when registration is disabled. Version 4.0.18 fixes the issue.

Affected (CNA)

Vendor / productVersions
thorsten / phpMyFAQaffected < 4.0.18

CWE

CWE-862

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.