thorsten phpMyFAQ up to 4.0.16 Endpoint SetupController.php userIsAuthenticated authorization

Summaryinfo

A vulnerability classified as problematic was found in thorsten phpMyFAQ up to 4.0.16. Impacted is the function userIsAuthenticated of the file SetupController.php of the component Endpoint. Such manipulation leads to authorization. This vulnerability is documented as CVE-2026-24421. The attack can be executed remotely. Additionally, an exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in thorsten phpMyFAQ up to 4.0.16. Affected by this issue is the function userIsAuthenticated of the file SetupController.php of the component Endpoint. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-24421 since 01/22/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details as well as a public exploit are known.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. By approaching the search of inurl:SetupController.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 4.0.17 eliminates this vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (52523) and EUVD (EUVD-2026-4258). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Content Management System

Vendor

• thorsten

Name

• phpMyFAQ

Version

• 4.0.0
• 4.0.1
• 4.0.2
• 4.0.3
• 4.0.4
• 4.0.5
• 4.0.6
• 4.0.7
• 4.0.8
• 4.0.9
• 4.0.10
• 4.0.11
• 4.0.12
• 4.0.13
• 4.0.14
• 4.0.15
• 4.0.16

License

• open-source

Website

• Product: https://github.com/thorsten/phpMyFAQ/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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