CVE-2026-34728

phpMyFAQ is an open source FAQ web application. Prior to version 4.1.1, the MediaBrowserController::index() method handles file deletion for the media browser. When the fileRemove action is triggered, the user-supplied name parameter is concatenated with the base upload directory path without any path traversal validation. The FILTER_SANITIZE_SPECIAL_CHARS filter only encodes HTML special characters (&, ', ", <, >) and characters with ASCII value < 32, and does not prevent directory traversal sequences like ../. Additionally, the endpoint does not validate CSRF tokens, making it exploitable via CSRF attacks. This issue has been patched in version 4.1.1.

• CWE-22

• https://github.com/thorsten/phpMyFAQ/releases/tag/4.1.1Product
• https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-38m8-xrfj-v38xExploit, Mitigation, Vendor Advisory
• https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-38m8-xrfj-v38xExploit, Mitigation, Vendor Advisory

Published

Apr 2, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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