---
cve: "CVE-2026-47345"
severity: "MEDIUM"
cvss: 5.1
epss: "37%"
vendor: "TYPO3"
kev: false
exploited: false
published: "2026-06-08 20:17:01"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T17:00:42+02:00"
---

# CVE-2026-47345

> 5.1 MEDIUM · 🧪 PoC

## Beschreibung

Namespace attributes are not encoded correctly during HTML serialization. This allows bypassing the cross-site scripting prevention mechanism of typo3/html-sanitizer before version 2.3.2.

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |

## Patch verfügbar (OSV)

- 8b5d0be44ded457ca993ec9ca93d859941c63764 (Commit)

## Referenzen

- <https://typo3.org/security/advisory/typo3-core-sa-2026-006>
- <https://github.com/TYPO3/html-sanitizer/commit/8b5d0be44ded457ca993ec9ca93d859941c63764>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-47345) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_