CVE-2019-18426

CVE-2019-18426

Vendor Facebook
Product WhatsApp Desktop
Weakness CWE-79 · XSS
KEV Status Known Exploited
Published January 21, 2020
Last update October 21, 2025
View on NVD All CVEs

CVSS base score

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What the vulnerability does

01Description

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.

CISA mandated remediation

02CISA Required Action

Apply updates per vendor instructions.

Key dates

03Disclosure timeline

January 21, 2020 CVE published
October 21, 2025 Record updated