---
cve: "CVE-2019-18426"
severity: "HIGH"
cvss: 8.2
epss: "67.9%"
vendor: "Facebook"
kev: true
exploited: true
published: "2020-01-21 21:15:16"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T03:49:26+02:00"
---

# CVE-2019-18426

> 8.2 HIGH · ⚠️ CISA KEV (1572 Tage) · 🔓 Exploited · 🧪 PoC

## Beschreibung

A vulnerability in WhatsApp Desktop versions prior to 0.3.9309 when paired with WhatsApp for iPhone versions prior to 2.20.10 allows cross-site scripting and local file reading. Exploiting the vulnerability requires the victim to click a link preview from a specially crafted text message.

## CVSS-Vektor

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

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

## Exploit-Evidenz

- [EDB-48295 — WhatsApp Desktop 0.3.9308 - Persistent Cross-Site Scripting](https://www.exploit-db.com/exploits/48295)

## Referenzen

- <https://www.facebook.com/security/advisories/cve-2019-18426>
- <http://packetstormsecurity.com/files/157097/WhatsApp-Desktop-0.3.9308-Cross-Site-Scripting.html>
- <https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-18426>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2019-18426) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_