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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.008 (55.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.008 · change: +0.001
Affected products
- Phpmyfaq
- Thorsten Phpmyfaq — versions < 4.1.1
Weakness classification (CWE)
References
- github.com/thorsten/phpMyFAQ/security/advisories/GHSA-38m8-xrfj-v38x (Exploit, Mitigation, Vendor Advisory)
- github.com/thorsten/phpMyFAQ/releases/tag/4.1.1 (Product)
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.