---
cve: "CVE-2026-35451"
severity: "MEDIUM"
cvss: 5.7
epss: "0.2%"
vendor: "twentyhq"
kev: false
exploited: false
published: "2026-04-21 17:16:53"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T10:57:17+02:00"
---

# CVE-2026-35451

> 5.7 MEDIUM · 🧪 PoC

## Beschreibung

Twenty is an open source CRM. Prior to 1.20.6, a Stored Cross-Site Scripting (XSS) vulnerability exists in the BlockNote editor component. Due to a lack of protocol validation in the FileBlock component and insufficient server-side inspection of block content, an attacker can inject a javascript: URI into the url property of a file block. This allows the execution of arbitrary JavaScript when a user clicks on the malicious file attachment. This vulnerability is fixed in 1.20.6.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Erforderlich | good |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Keine | good |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 8da69e0f77ea820a6845a4c3c025b6af3861d523 (Commit)

## Referenzen

- <https://github.com/twentyhq/twenty/security/advisories/GHSA-7w89-7q26-gj7q>
- <https://github.com/twentyhq/twenty/commit/8da69e0f77ea820a6845a4c3c025b6af3861d523>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-35451) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_