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CVE-2019-18426

Published: Jan 21, 2020Updated: Oct 24, 2025 Sources: CVE List NVD BDUCWE-79
NVD MITRE
8.2CVSSHIGH
EPSS Score
67.9%
Top 0.8%
CISA KEV
Active Exploitation
Since May 23, 2022
Exploits
1 Known
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:CC:HI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

WhatsAppMeta Platforms Inc
Library
OSS Libraries / web-framework
WhatsApp DesktopMeta Platforms Inc
Library
OSS Libraries / web-framework
WhatsApp DesktopFacebookCommunications
whatsappwhatsapp
Mobile App
Communications / messaging-chat
meta platforms inccommercialUSOSS Librariesaka facebook, react-server-dom-parcel, hermes js, zstandard
facebookcommercialUSCommunicationsaka meta, facebook inc.
whatsappcommercialCommunicationsaka whatsapp business, whatsapp desktop

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:May 23, 2022
Remediation due:Jun 13, 2022

Required action: Apply updates per vendor instructions.

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://www.facebook.com/security/advisories/cve-2019-18426
facebook.com
http://packetstormsecurity.com/files/157097/WhatsApp-Desktop-0.3.9308-Cross-Site-Scripting.html
packetstormsecurity.com
https://www.cisa.gov/sites/default/files/csv/known_exploited_vulnerabilities.csv
cisa.gov
and 1 more references View all →

Timeline

Published
Jan 21, 2020
Added to CISA KEV
May 23, 2022
Last Updated
Oct 24, 2025

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