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CVE-2019-18426: WhatsApp Cross-Site Scripting Vulnerability

criticalknown exploitedpublic exploitCVE-2019-18426
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
A vulnerability in WhatsApp Desktop when paired with WhatsApp for iPhone allows cross-site scripting and local file reading.

CSIRTS triage

vendor: WhatsAppproduct: WhatsApp DesktopCross-site scripting
What
A vulnerability in WhatsApp Desktop when paired with WhatsApp for iPhone allows cross-site scripting and local file reading.
Who is affected
Users of WhatsApp Desktop paired with WhatsApp for iPhone.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Update to the latest version of WhatsApp Desktop.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-05-23
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2019-18426

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2019-18426coverage & exploitation statusNVD · CVE.org

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