CVE-2019-18426

HighCVSS 8.2/10Known exploited (CISA KEV)Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 8.2/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

Weakness enumeration

CWE-79

Affected software

VendorProductVersions
FacebookWhatsApp Desktop0.3.9309; >= unspecified, < 0.3.9309

References

Timeline

Published
Jan 21, 2020
Last modified
Jun 17, 2026
Added to CISA KEV
May 23, 2022
NVD status
Analyzed

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CVE-2019-18426: High severity, CVSS 8.2 | Vulnix