---
cve: "CVE-2021-3742"
severity: "HIGH"
cvss: 7.9
epss: "38%"
vendor: "chatwoot"
kev: false
exploited: false
published: "2024-11-15 11:15:05"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-17T16:53:43+02:00"
---

# CVE-2021-3742

> 7.9 HIGH · 🧪 PoC

## Beschreibung

A Server-Side Request Forgery (SSRF) vulnerability was discovered in chatwoot/chatwoot, affecting all versions prior to 2.5.0. The vulnerability allows an attacker to upload an SVG file containing a malicious SSRF payload. When the SVG file is used as an avatar and opened in a new tab, it can trigger the SSRF, potentially leading to host redirection.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 63b1013b450c1539ace1cc6f5657368a33e196bc (Commit)
- 6fdd4a29969be8423f31890b807d27d13627c50c (Commit)

## Referenzen

- <https://huntr.com/bounties/1625472546121-chatwoot/chatwoot>
- <https://github.com/chatwoot/chatwoot/commit/6fdd4a29969be8423f31890b807d27d13627c50c>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2021-3742) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_