---
cve: "CVE-2020-8156"
severity: "HIGH"
cvss: 7.0
epss: "20.8%"
vendor: "Generic Security"
kev: false
exploited: false
published: "2020-05-12 13:15:13"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-14T05:01:20+02:00"
---

# CVE-2020-8156

> 7.0 HIGH

## Beschreibung

A missing verification of the TLS host in Nextcloud Mail 1.1.3 allowed a man in the middle attack.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 7e3eb7526ad23d2f3c8bb1dbedb950563a94dedd (Commit)

## Referenzen

- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KC6HLX5SG4PZO6Y54D2LFJ4ATG76BKOP/>
- <https://nextcloud.com/security/advisory/?id=NC-SA-2020-020>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2020-8156) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_