CVE-2019-16263: Twitter Kit

High severity, CVSS 7.4. EPSS: 1% chance of exploitation in the next 30 days.

The Twitter Kit framework through 3.4.2 for iOS does not properly validate the api.twitter.com SSL certificate. Although the certificate chain must contain one of a set of pinned certificates, there are certain implementation errors such as a lack of hostname verification. NOTE: this is an end-of-life product.

Affected products

• Twitter Twitter Kit: up to and including 3.4.2

Published 2019-10-07. Last modified 2026-06-17.