CVE-2026-24421 MEDIUM

CVE-2026-24421: phpMyFAQ missing authorization exposes /api/setup/backup to any authenticated user

Vendor Thorsten

Product phpMyFAQ

Weakness CWE-862 · Missing authorization

Published January 24, 2026

Last update January 26, 2026

View on NVD All CVEs

CVSS base score

6.5/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction None

Confidentiality High

Integrity None

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

January 24, 2026 CVE published

January 26, 2026 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-24421 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/862.html

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04Related CVE

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