---
cve: "CVE-2026-47346"
severity: "HIGH"
cvss: 7.6
epss: "25%"
vendor: "TYPO3"
kev: false
exploited: false
published: "2026-06-09 11:16:52"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T16:47:28+02:00"
---

# CVE-2026-47346

> 7.6 HIGH · 🧪 PoC

## Beschreibung

Backend users with file write permissions were able to upload form definition files with mixed-case extensions (e.g., .FORM.YAML) to bypass the Form Framework's upload restriction. Maliciously crafted form definition files can be used to execute arbitrary SQL statements, allowing attackers to escalate privileges by creating administrative backend user accounts. This issue affects TYPO3 CMS versions before 10.4.57, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 and 14.0.0-14.3.2.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/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 |

## Patch verfügbar (OSV)

- 59bfeaaf0136dfe17011786ce825884e48bedc8d (Commit)
- e16ec78165a7d60f09dcac04bfbb309409e174b3 (Commit)

## Referenzen

- <https://typo3.org/security/advisory/typo3-core-sa-2026-008>
- <https://github.com/TYPO3/typo3/commit/2030617e6f273cee7b756c695f0a48a45a31eb47>
- <https://github.com/TYPO3/typo3/commit/eb2b2251d90339d3ab55df3d4c0378ae0c780b45>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-47346) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_