---
cve: "CVE-2021-41256"
severity: "MEDIUM"
cvss: 5.8
epss: "1.1%"
vendor: "nextcloud"
kev: false
exploited: false
published: "2021-11-30 21:15:08"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T06:55:56+02:00"
---

# CVE-2021-41256

> 5.8 MEDIUM · 🧪 PoC

## Beschreibung

nextcloud news-android is an Android client for the Nextcloud news/feed reader app. In affected versions the Nextcloud News for Android app has a security issue by which a malicious application installed on the same device can send it an arbitrary Intent that gets reflected back, unintentionally giving read and write access to non-exported Content Providers in Nextcloud News for Android. Users should upgrade to version 0.9.9.63 or higher as soon as possible.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- f922eccbb66539c481b8c2f6ca6ca796c6e41470 (Commit)
- 05449cb666059af7de2302df9d5c02997a23df85 (Commit)

## Referenzen

- <https://github.com/nextcloud/news-android/security/advisories/GHSA-2q9v-q3cc-h9f3>
- <https://github.com/nextcloud/news-android/commit/05449cb666059af7de2302df9d5c02997a23df85>
- <https://github.com/nextcloud/news-android/blob/master/security/GHSL-2021-1033_Nextcloud_News_for_Android.md>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2021-41256) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_