---
cve: "CVE-2026-63006"
severity: "MEDIUM"
cvss: 5.3
epss: ""
vendor: "Zammad"
kev: false
exploited: false
published: "2026-09-25 19:17:54"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-28T14:01:36+02:00"
---

# CVE-2026-63006

> 5.3 MEDIUM · 🧪 PoC

## Beschreibung

Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, attacker-controlled HTML in inbound emails or tickets could bypass the image URL sanitizer using path traversal sequences. When an authenticated agent views the content, the browser resolves the URL to a protected API endpoint and sends the request with the agent's session cookie, enabling side effects such as forced logout without any user interaction. This issue is fixed in version 7.1.2.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 856af85c12413087d6a74ffee25b16048a5ed8c3 (Commit)

## BSI-Hinweise (deutsch)

- [Zammad: Mehrere Schwachstellen](https://wid.cert-bund.de/portal/wid/sicherheitshinweis/WID-SEC-W-2026-2641)

## Referenzen

- <https://github.com/zammad/zammad/security/advisories/GHSA-33p2-cm7w-62g3>
- <https://github.com/zammad/zammad/commit/856af85c12413087d6a74ffee25b16048a5ed8c3>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-63006) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_