---
cve: "CVE-2023-53979"
severity: "HIGH"
cvss: 8.6
epss: "80%"
vendor: "MyBB"
kev: false
exploited: false
published: "2025-12-22 22:16:03"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T06:50:10+02:00"
---

# CVE-2023-53979

> 8.6 HIGH · 🧪 PoC

## Beschreibung

MyBB 1.8.32 contains a chained vulnerability that allows authenticated administrators to bypass avatar upload restrictions and execute arbitrary code. Attackers can modify upload path settings, upload a malicious PHP-embedded image file, and execute commands through the language configuration editing interface.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Hoch | good |
| UI Interaktion | Keine | bad |

## Referenzen

- <https://www.exploit-db.com/exploits/51213>
- <https://mybb.com/>
- <https://fdlucifer.github.io/2023/01/17/mybb1-8-32-LFI-RCE/>
- <https://www.vulncheck.com/advisories/mybb-authenticated-remote-code-execution-via-chained-vulnerabilities>
- <https://www.cve.org/CVERecord?id=CVE-2022-45867>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2023-53979) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_