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.

INFO

Published Date :

2026-02-27T19:54:51.992Z

Last Modified :

2026-03-03T20:25:01.562Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-27836 vulnerability.

Vendors Products
Phpmyfaq
  • Phpmyfaq
Thorsten
  • Phpmyfaq
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-27836.

URL Resource
https://github.com/thorsten/phpMyFAQ/commit/f2ab673f0668753cd0f7c7c8bc7fd2304dcf5cb1 cve-icon cve-icon
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-w22q-m2fm-x9f4 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact