CVE-2019-18426

State: Published
Severity: 8.2 High
Published: Jan 21, 2020
Updated: Oct 21, 2025
Reserved: Oct 25, 2019

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	8.2 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N	CISA-ADP

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (CWE-79)

Affected Products

Product	Versions
WhatsApp DesktopFacebook	0.3.9309Affected before 0.3.9309Affected

References

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-2019-18426government-resource

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