CVEs / CVE-2019-18426
CVE-2019-18426: WhatsApp Cross-Site Scripting Vulnerability
- Known exploited in the CISA KEV catalog since 23 May 2022
- high 8.2 CVSS 3.1 (NVD)
- EPSS 67.8% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
A vulnerability in WhatsApp Desktop when paired with WhatsApp for iPhone allows cross-site scripting and local file reading.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Facebook WhatsApp Desktop | 0.3.9309 | — |
| Facebook WhatsApp Desktop | from unspecified, before 0.3.9309 | 0.3.9309 |
Exploitation
| In CISA KEV since | 23 May 2022 |
|---|---|
| Due date for US federal agencies | 13 Jun 2022 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 8.2 highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:NScored by NVD |
|---|---|
| Weakness | CWE-79 |
References
- CVE-2019-18426 on NVD
- CVE-2019-18426 in the CISA KEV catalog
- http://packetstormsecurity.com/files/157097/WhatsApp-Desktop-0.3.9308-Cross-Site-Scripting.html Exploit, Third Party Advisory, VDB Entry
- https://www.facebook.com/security/advisories/cve-2019-18426 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-18426 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.