CVE-2019-18426 vulnerability in WhatsApp Products
Published on January 21, 2020
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.
Known Exploited Vulnerability
This WhatsApp Cross-Site Scripting Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. A vulnerability in WhatsApp Desktop when paired with WhatsApp for iPhone allows cross-site scripting and local file reading.
The following remediation steps are recommended / required by June 13, 2022: Apply updates per vendor instructions.
Vulnerability Analysis
CVE-2019-18426 is exploitable with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity, and no impact on availability.
Weakness Type
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2019-18426 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2019-18426
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Affected Versions
Facebook WhatsApp Desktop:- Version 0.3.9309 is affected.
- Version unspecified and below 0.3.9309 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.