CVE-2019-16263 json
The Twitter Kit framework through 3.4.2 for iOS does not properly validate the api.twitter.com SSL certificate.
published 2019-10-07 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-7066
- cvss
- 7.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 63%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
1.03% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- sit.fraunhofer.de https://www.sit.fraunhofer.de/fileadmin/dokumente/CVE/Advisory_TwitterKit_for_iOS_CVE-2019-16263.pdf referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
| NVD | 2.0 | 5.8 | AV:N/AC:M/Au:N/C:P/I:P/A:N |
Classification
- Weakness
-
- CWE-295 Improper Certificate Validation
References
-
sit.fraunhofer.de
/fileadmin/dokumente/CVE/Advisory_TwitterKit_for_iOS_CVE-2019-16263.pdf
exploit, third-party-advisory
-
github.com
/twitter-archive/twitter-kit-ios/blob/ac42e1351a66afa5ff7718d04d64a905dafe1f41/TwitterCore/TwitterCore/Network
third-party-advisory
-
blog.appicaptor.com
/2019/10/04/vulnerable-library-warning-twitterkit-for-ios/
third-party-advisory
Sources
- CVE List CVE-2019-16263
- NVD CVE-2019-16263
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