Meta Platforms WhatsApp Cross-Site Scripting Vulnerability
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…
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 4 / 5
- KEV catalog (CISA)23 May 2022
- Exploited in EUVD (ENISA)23 May 2022
- Used by ransomwareno
- EPSS above 10 %67.9%
- No account, over the networkyes
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: Apply updates per vendor instructions.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Description ENISA EUVD
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.
Affected products
- 0.3.9309
- unspecified <0.3.9309
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
-
Published
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Exploitation reported (ENISA)
-
Added to the KEV catalog
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CISA remediation due date
-
EPSS peak: 67.9%
References
Other exploited vulnerabilities from the same vendor
- CVE-2025-55177Meta Platforms WhatsApp Incorrect Authorization Vulnerability4.4 · Background exploitation
- CVE-2019-3568WhatsApp VOIP Stack Buffer Overflow Vulnerability7.2 · Background exploitation