---
cve: "CVE-2023-3581"
severity: "MEDIUM"
cvss: 6.2
epss: "26%"
vendor: "Mattermost"
kev: false
exploited: false
published: "2023-07-17 16:15:10"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-14T22:31:58+02:00"
---

# CVE-2023-3581

> 6.2 MEDIUM

## Beschreibung

Mattermost fails to properly validate the origin of a websocket connection allowing a MITM attacker on Mattermost to access the websocket APIs.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 9c1ca9e7239b14ca3a6872bdf2f22e3bc6126985 (Commit)
- 1b6aa36dd17e8e8aed03f563c687bd69251cffe9 (Commit)

## Referenzen

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

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2023-3581) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_