{"id":"CVE-2019-16263","details":"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.","modified":"2026-08-27T08:15:22.604472Z","published":"2019-10-07T12:15:11.680Z","references":[{"type":"ADVISORY","url":"https://blog.appicaptor.com/2019/10/04/vulnerable-library-warning-twitterkit-for-ios/"},{"type":"ADVISORY","url":"https://github.com/twitter-archive/twitter-kit-ios/blob/ac42e1351a66afa5ff7718d04d64a905dafe1f41/TwitterCore/TwitterCore/Networking/Security/TWTRServerTrustEvaluator.m#L75-L81"},{"type":"EVIDENCE","url":"https://www.sit.fraunhofer.de/fileadmin/dokumente/CVE/Advisory_TwitterKit_for_iOS_CVE-2019-16263.pdf"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/twitter-archive/twitter-kit-ios","events":[{"introduced":"0"},{"last_affected":"ac42e1351a66afa5ff7718d04d64a905dafe1f41"}],"database_specific":{"cpe":"cpe:2.3:a:twitter:twitter_kit:*:*:*:*:*:iphone_os:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"3.4.2"}],"source":"CPE_RANGE"}}],"versions":["v3.4.2","v3.4.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-16263.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"}]}