CVE-2020-1901

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% 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-400

Description

Receiving a large text message containing URLs in WhatsApp for iOS prior to v2.20.91.4 could have caused the application to freeze while processing the message.

Affected products

Facebook WhatsApp for Android: before 2.20.91.4 — fixed in 2.20.91.4

How to fix

Upgrade to a fixed version: Facebook WhatsApp for Android 2.20.91.4. Check the vendor advisory for mitigations.

References

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

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