---
cve: "CVE-2021-43788"
severity: "MEDIUM"
cvss: 5.0
epss: "25.8%"
vendor: "NodeBB"
kev: false
exploited: false
published: "2021-11-29 20:15:08"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-29T04:47:49+02:00"
---

# CVE-2021-43788

> 5.0 MEDIUM · 🧪 PoC

## Beschreibung

Nodebb is an open source Node.js based forum software. Prior to v1.18.5, a path traversal vulnerability was present that allowed users to access JSON files outside of the expected `languages/` directory. The vulnerability has been patched as of v1.18.5. Users are advised to upgrade as soon as possible.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- c8b2fc46dc698db687379106b3f01c71b80f495f (Commit)
- c28ac8ec52910c4f9fffec5fb11de2705126c790 (Commit)

## Referenzen

- <https://github.com/NodeBB/NodeBB/releases/tag/v1.18.5>
- <https://github.com/NodeBB/NodeBB/security/advisories/GHSA-pfj7-2qfw-vwgm>
- <https://github.com/NodeBB/NodeBB/commit/c8b2fc46dc698db687379106b3f01c71b80f495f>
- <https://blog.sonarsource.com/nodebb-remote-code-execution-with-one-shot/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2021-43788) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_