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CVE-2026-24421

MediumPublished

phpMyFAQ missing authorization exposes /api/setup/backup to any authenticated user

Published: Jan 24, 2026
Updated: Jan 26, 2026
Assigning CNA: GitHub_M
Evidence observed: Apr 29, 2026

Primary CVSS

6.5/ 10Medium

nvd · CVSS 3.1

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

EPSS probability estimate

1.8%

Low · next 30 days

Percentile: 76.8%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

phpMyFAQ 4.0.16 - Improper AuthorizationExploit
contact · php · Apr 29, 2026

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