CVE-2026-27836
Last modified
CVE-2026-27836 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.41% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Phpmyfaq | Phpmyfaq | < 4.0.18 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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