---
cve: "CVE-2026-84461"
severity: "MEDIUM"
cvss: 6.9
epss: "0.3%"
vendor: "Zammad"
kev: false
exploited: false
published: "2026-09-25 19:17:57"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-28T08:15:24+02:00"
---

# CVE-2026-84461

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, the two-factor login step let an attacker try unlimited password guesses for any account without triggering Zammad's normal lockout or rate limiting. The response also revealed whether a guess was correct, even before two-factor authentication was checked. This made it possible to brute-force weak or reused passwords. This issue is fixed in version 7.1.2.

## 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:L/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)

- d51254f1c6da13f6ee27636a5c82e53f7e59666b (Commit)

## Referenzen

- <https://github.com/zammad/zammad/security/advisories/GHSA-6vh5-pfp2-5rmh>
- <https://github.com/zammad/zammad/commit/d51254f1c6da13f6ee27636a5c82e53f7e59666b>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-84461) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_