---
cve: "CVE-2023-28643"
severity: "MEDIUM"
cvss: 5.5
epss: "79%"
vendor: "nextcloud"
kev: false
exploited: false
published: "2023-03-30 19:15:06"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-12T03:23:12+02:00"
---

# CVE-2023-28643

> 5.5 MEDIUM · 🧪 PoC

## Beschreibung

Nextcloud server is an open source home cloud implementation. In affected versions when a recipient receives 2 shares with the same name, while a memory cache is configured, the second share will replace the first one instead of being renamed to `{name} (2)`. It is recommended that the Nextcloud Server is upgraded to 25.0.3 or 24.0.9. Users unable to upgrade should avoid sharing 2 folders with the same name to the same user.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- b4899ddee19c94db5d65c1f813fad51541ae1347 (Commit)
- 494a0c1073b460d4d2a5c03ff3567fc388b91e36 (Commit)

## Referenzen

- <https://github.com/nextcloud/security-advisories/security/advisories/GHSA-hhq4-4pr8-wm27>
- <https://github.com/nextcloud/server/issues/34015>
- <https://github.com/nextcloud/server/pull/36047>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2023-28643) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_