---
cve: "CVE-2026-54543"
severity: "MEDIUM"
cvss: 5.4
epss: "43%"
vendor: "froxlor"
kev: false
exploited: false
published: "2026-08-18 21:16:36"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-13T18:33:38+02:00"
---

# CVE-2026-54543

> 5.4 MEDIUM · 🧪 PoC

## Beschreibung

Froxlor is open source server administration software. Prior to 2.3.8, the DomainZones.add API command in lib/Froxlor/Api/Commands/DomainZones.php accepts user-controlled record and type values without rejecting line delimiters, tab characters, semicolons, or unsupported DNS record types before lib/Froxlor/Dns/DnsEntry.php serializes the values into a BIND zone file. An authenticated customer with DNS-zone permissions can place a crafted value in the record field, or use the related type-field variant, to create additional resource-record lines that bypass Froxlor's field-level validation. BIND accepts the injected records, allowing modification of DNS data and possible DNS availability impact within a zone the caller is authorized to manage. This issue is fixed in version 2.3.8.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- a4f09f09fa71337b6cdff364d0a641d631a0130a (Commit)
- e118217f90bb9c6a08f561d382d5ca2341eb4dfa (Commit)

## Referenzen

- <https://github.com/froxlor/froxlor/security/advisories/GHSA-5rw4-4665-cvwf>
- <https://github.com/froxlor/froxlor/commit/a4f09f09fa71337b6cdff364d0a641d631a0130a>
- <https://github.com/froxlor/froxlor/releases/tag/2.3.8>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-54543) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_