---
cve: "CVE-2026-4357"
severity: "CRITICAL"
cvss: 10.0
epss: "0.3%"
vendor: "Unknown"
kev: false
exploited: false
published: "2026-09-02 15:17:38"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T17:39:40+02:00"
---

# CVE-2026-4357

> 10.0 CRITICAL

## Beschreibung

The Embed HTML5 Game WordPress plugin through 1.3 does not properly restrict who can upload files via the plugin, as well as what can be uploaded, making it possible for unauthenticated attackers to upload PHP backdoors on affected sites.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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 | Keine | bad |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Referenzen

- <https://wpscan.com/vulnerability/b364969d-9dac-46ce-83e2-fc0fc2e5f698/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-4357) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_