---
cve: "CVE-2026-34723"
severity: "HIGH"
cvss: 8.7
epss: "0.4%"
vendor: "Zammad"
kev: false
exploited: false
published: "2026-04-08 19:25:22"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-27T21:18:12+02:00"
---

# CVE-2026-34723

> 8.7 HIGH · 🧪 PoC

## Beschreibung

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, unauthenticated remote attackers were able to access the getting started endpoint to get access to sensitive internal entity data, even after the system setup was completed. This vulnerability is fixed in 7.0.1 and 6.5.4.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **yes**
  - Technical Impact: **partial**

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 15c7e6d4ffd95c84535d334b7c0ce0bc2fbc5228 (Commit)

## BSI-Hinweise (deutsch)

- [Zammad: Mehrere Schwachstellen](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2026-1000)

## Referenzen

- <https://github.com/zammad/zammad/security/advisories/GHSA-hcm9-ch62-5727>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-34723) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_