---
cve: "CVE-2021-47937"
severity: "HIGH"
cvss: 8.7
epss: "59%"
vendor: "e107"
kev: false
exploited: false
published: "2026-05-10 13:16:29"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T16:16:16+02:00"
---

# CVE-2021-47937

> 8.7 HIGH · 🧪 PoC

## Beschreibung

e107 CMS 2.3.0 contains a remote code execution vulnerability that allows authenticated users with theme installation permissions to execute arbitrary commands by uploading malicious theme files. Attackers can upload a crafted theme package through the theme.php endpoint that deploys a web shell to the e107_themes directory, then execute system commands via the payload.php script.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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 | Gering | warn |
| UI Interaktion | Keine | bad |

## Referenzen

- <https://www.exploit-db.com/exploits/50315>
- <https://e107.org/>
- <https://e107.org/download>
- <https://www.vulncheck.com/advisories/e107-cms-authenticated-remote-code-execution-via-theme-upload>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2021-47937) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_