---
cve: "CVE-2026-41228"
severity: "CRITICAL"
cvss: 10.0
epss: "52%"
vendor: "froxlor"
kev: false
exploited: false
published: "2026-04-23 03:41:47"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-19T04:01:10+02:00"
---

# CVE-2026-41228

> 10.0 CRITICAL · 🧪 PoC

## Beschreibung

Froxlor is open source server administration software. Prior to version 2.3.6, the Froxlor API endpoint `Customers.update` (and `Admins.update`) does not validate the `def_language` parameter against the list of available language files. An authenticated customer can set `def_language` to a path traversal payload (e.g., `../../../../../var/customers/webs/customer1/evil`), which is stored in the database. On subsequent requests, `Language::loadLanguage()` constructs a file path using this value and executes it via `require`, achieving arbitrary PHP code execution as the web server user. Version 2.3.6 fixes the issue.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- d32aa3567c8eb033bbc8667bfca2969f5cdb199f (Commit)
- bc5e6dbaa90e6f3573129da640595e8c770e1d0c (Commit)

## Referenzen

- <https://github.com/froxlor/froxlor/security/advisories/GHSA-w59f-67xm-rxx7>
- <https://github.com/froxlor/froxlor/commit/bc5e6dbaa90e6f3573129da640595e8c770e1d0c>
- <https://github.com/froxlor/froxlor/releases/tag/2.3.6>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-41228) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_