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
Affected Vendors & Products
References
History
Wed, 04 Mar 2026 16:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Phpmyfaq
Phpmyfaq phpmyfaq |
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| CPEs | cpe:2.3:a:phpmyfaq:phpmyfaq:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Phpmyfaq
Phpmyfaq phpmyfaq |
Tue, 03 Mar 2026 21:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Mon, 02 Mar 2026 12:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Thorsten
Thorsten phpmyfaq |
|
| Vendors & Products |
Thorsten
Thorsten phpmyfaq |
Fri, 27 Feb 2026 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | phpMyFAQ Allows Unauthenticated Account Creation via WebAuthn Prepare Endpoint | |
| Weaknesses | CWE-862 | |
| References |
| |
| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-02-27T19:54:51.992Z
Updated: 2026-03-03T20:25:01.562Z
Reserved: 2026-02-24T02:32:39.801Z
Link: CVE-2026-27836
Updated: 2026-03-03T20:24:58.288Z
Status : Analyzed
Published: 2026-02-27T20:21:40.330
Modified: 2026-03-04T16:08:53.133
Link: CVE-2026-27836
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