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Vulnerability record · CVE-2026-24421 · published 24 January 2026

CVE-2026-24421: Phpmyfaq missing authorization vulnerability

Phpmyfaq · Phpmyfaq

phpMyFAQ is an open source FAQ web application. Versions 4.0.16 and below have flawed authorization logic which exposes the /api/setup/backup endpoint to any authenticated user despite their permissions. SetupController.php uses userIsAuthenticated() but does not verify that the requester has configuration/admin permissions. Non-admin users can trigger a configuration backup and retrieve its path. The endpoint only checks authentication, not authorization, and returns a link to the generated ZIP. This issue is fixed in version 4.0.17.

6.5 CVSS 3.1 Medium EPSS 1.8% · top 22.6% CWE-862 · Missing authorization
6.5CVSS 3.1 base score
1.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

phpMyFAQ is an open source FAQ web application. Versions 4.0.16 and below have flawed authorization logic which exposes the /api/setup/backup endpoint to any authenticated user despite their permissions. SetupController.php uses userIsAuthenticated() but does not verify that the requester has configuration/admin permissions. Non-admin users can trigger a configuration backup and retrieve its path. The endpoint only checks authentication, not authorization, and returns a link to the generated ZIP. This issue is fixed in version 4.0.17.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-wm8h-26fv-mg7g ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-59943Phpmyfaq improper access control vulnerabilityphpMyFAQ is an open source FAQ web application. Versions 4.0-nightly-2025-10-03 and below do not enforce uniqueness of email addresses during user re…EPSS 0.42%9.8CVE-2023-5865Phpmyfaq insufficient session expiration vulnerabilityInsufficient Session Expiration in GitHub repository thorsten/phpmyfaq prior to 3.2.2.EPSS 0.58%9.8CVE-2023-5227Phpmyfaq unrestricted file upload vulnerabilityUnrestricted Upload of File with Dangerous Type in GitHub repository thorsten/phpmyfaq prior to 3.1.8.EPSS 0.62%9.8CVE-2023-4006Phpmyfaq csv injection vulnerabilityImproper Neutralization of Formula Elements in a CSV File in GitHub repository thorsten/phpmyfaq prior to 3.1.16.EPSS 0.81%9.8CVE-2023-2429Phpmyfaq improper access control vulnerabilityImproper Access Control in GitHub repository thorsten/phpmyfaq prior to 3.1.13.EPSS 0.53%9.8CVE-2023-1886Phpmyfaq authentication bypass by capture-replay vulnerabilityAuthentication Bypass by Capture-replay in GitHub repository thorsten/phpmyfaq prior to 3.1.12.EPSS 0.88%9.8CVE-2023-1753Phpmyfaq weak password requirements vulnerabilityWeak Password Requirements in GitHub repository thorsten/phpmyfaq prior to 3.1.12.EPSS 0.72%9.8CVE-2023-0789Phpmyfaq command injection vulnerabilityCommand Injection in GitHub repository thorsten/phpmyfaq prior to 3.1.11.EPSS 1.7%

Source: NIST National Vulnerability Database (record CVE-2026-24421), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.