CVE-2016-2402

MediumCVSS 5.9/10Last modified Jun 17, 2026

Description

OkHttp before 2.7.4 and 3.x before 3.1.2 allows man-in-the-middle attackers to bypass certificate pinning by sending a certificate chain with a certificate from a non-pinned trusted CA and the pinned certificate.

Metrics

CVSS 3.1 5.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-295

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

http://www.openwall.com/lists/oss-security/2016/02/10/8Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/02/18/7Mailing List, Third Party Advisory
https://koz.io/pinning-cve-2016-2402/Technical Description, Third Party Advisory
https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E
https://publicobject.com/2016/02/11/okhttp-certificate-pinning-vulnerability/Vendor Advisory
http://www.openwall.com/lists/oss-security/2016/02/10/8Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/02/18/7Mailing List, Third Party Advisory
https://koz.io/pinning-cve-2016-2402/Technical Description, Third Party Advisory
https://lists.apache.org/thread.html/rd0e44e8ef71eeaaa3cf3d1b8b41eb25894372e2995ec908ce7624d26%40%3Ccommits.pulsar.apache.org%3E
https://publicobject.com/2016/02/11/okhttp-certificate-pinning-vulnerability/Vendor Advisory

Timeline

Published: Jan 30, 2017
Last modified: Jun 17, 2026
NVD status: Modified

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