---
cve: "CVE-2026-1046"
severity: "HIGH"
cvss: 7.6
epss: "24%"
vendor: "Mattermost"
kev: false
exploited: false
published: "2026-02-16 13:16:00"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T19:46:54+02:00"
---

# CVE-2026-1046

> 7.6 HIGH

## Beschreibung

Mattermost Desktop App versions <=6.0 6.2.0 5.2.13.0 fail to validate help links which allows a malicious Mattermost server to execute arbitrary executables on a user’s system via the user clicking on certain items in the Help menu Mattermost Advisory ID: MMSA-2026-00577

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- c6cb9ed5ca9cab2c181652d27c673b8433a5bb2c (Commit)
- 54fe4b55ba0f039d62477616025193b353a9f134 (Commit)

## Referenzen

- <https://mattermost.com/security-updates>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-1046) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_