CVE-2026-27836

HIGH

7.5

Description

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.

Details CVE

Score CVSS v3.17.5

SeveriteHIGH

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie2/27/2026

Derniere modification3/4/2026

Sourcenvd

Observations honeypot0

Produits affectes

phpmyfaq:phpmyfaq

Faiblesses (CWE)

CWE-862

References

https://github.com/thorsten/phpMyFAQ/commit/f2ab673f0668753cd0f7c7c8bc7fd2304dcf5cb1(security-advisories@github.com)

https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-w22q-m2fm-x9f4(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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