---
cve: "CVE-2026-34728"
severity: "HIGH"
cvss: 8.7
epss: "0.7%"
vendor: "thorsten"
kev: false
exploited: false
published: "2026-04-02 15:16:41"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T15:18:16+02:00"
---

# CVE-2026-34728

> 8.7 HIGH · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Erforderlich | good |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Keine | good |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- f791858b2aa4b811f5b19d10c20ba5c4a30786de (Commit)

## Referenzen

- <https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-38m8-xrfj-v38x>
- <https://github.com/thorsten/phpMyFAQ/releases/tag/4.1.1>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-34728) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_