---
cve: "CVE-2021-39160"
severity: "CRITICAL"
cvss: 9.6
epss: "1.7%"
vendor: "jupyterhub"
kev: false
exploited: false
published: "2021-08-25 18:10:11"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-18T03:46:56+02:00"
---

# CVE-2021-39160

> 9.6 CRITICAL · 🧪 PoC

## Beschreibung

nbgitpuller is a Jupyter server extension to sync a git repository one-way to a local path. Due to unsanitized input, visiting maliciously crafted links could result in arbitrary code execution in the user environment. This has been resolved in version 0.10.2 and all users are advised to upgrade. No work around exist for users who can not upgrade.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 0ad9cee237356dfb67615aa68b46f3ca4e95ad2b (Commit)
- 07690644f29a566011dd0d7ba14cae3eb0490481 (Commit)

## Referenzen

- <https://github.com/jupyterhub/nbgitpuller/security/advisories/GHSA-mq5p-2mcr-m52j>
- <https://github.com/jupyterhub/nbgitpuller/commit/07690644f29a566011dd0d7ba14cae3eb0490481>
- <https://github.com/jupyterhub/nbgitpuller/blob/main/CHANGELOG.md#0102---2021-08-25>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2021-39160) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_