Path Traversal in Phpmyfaq
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.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.007 (50.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:H.
Affected products
- Phpmyfaq
- Thorsten Phpmyfaq — versions < 4.1.1
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
- security-advisories@github.com (Product, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-34728?
- CVE-2026-34728 is a high-severity vulnerability in Phpmyfaq, classified under Path Traversal. CVSS score: 8.7/10. Published 2026-04-02.
- How severe is CVE-2026-34728?
- High severity. CVSS v3 base score is 8.7 out of 10.