CVE-2020-1904

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-10-06 · updated 2026-06-17
Weakness: CWE-23

Description

A path validation issue in WhatsApp for iOS prior to v2.20.61 and WhatsApp Business for iOS prior to v2.20.61 could have allowed for directory traversal overwriting files when sending specially crafted docx, xlsx, and pptx files as attachments to messages.

Affected products

Facebook WhatsApp for Android: before 2.20.61 — fixed in 2.20.61
Whatsapp Business: before 2.20.61 — fixed in 2.20.61

How to fix

Upgrade to a fixed version: Facebook WhatsApp for Android 2.20.61; Whatsapp Business 2.20.61. Check the vendor advisory for mitigations.

References

https://www.whatsapp.com/security/advisories/2020/
https://www.whatsapp.com/security/advisories/2020/

Get alerted when CVE-2020-1904 or the next vulnerability affects your stack