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[ CVE-2019-18426 · Published 21 Jan 2020 ]

WhatsApp Cross-Site Scripting Vulnerability

Exploited · CISA KEV CVSS 8.2 EPSS 68%No fix listed yet

[ Why it matters ]Priority signals

  • Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-05-23
  • EPSS: 68% chance of exploitation in the next 30 days (higher than 99% of CVEs)

[ Description ]Official 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.

CISA: A vulnerability in WhatsApp Desktop when paired with WhatsApp for iPhone allows cross-site scripting and local file reading.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 13 Jun 2022): Apply updates per vendor instructions.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References