---
cve: "CVE-2020-8189"
severity: "MEDIUM"
cvss: 5.4
epss: "2%"
vendor: "Generic Security"
kev: false
exploited: false
published: "2020-08-21 21:15:11"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-10T22:08:51+02:00"
---

# CVE-2020-8189

> 5.4 MEDIUM

## Beschreibung

A cross-site scripting error in Nextcloud Desktop client 2.6.4 allowed to present any html (including local links) when responding with invalid data on the login attempt.

## CVSS-Vektor

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

| 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 | Gering | warn |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- adada8b2eecd65d7a587b6abe0ae2aabca9a0b75 (Commit)

## Referenzen

- <https://hackerone.com/reports/685552>
- <https://nextcloud.com/security/advisory/?id=NC-SA-2020-027>
- <https://security.gentoo.org/glsa/202009-09>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2020-8189) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_