Vulnerability Report

CVE-2016-2402

Title: Squareup Okhttp3

Other

Proof Of Concept

No public PoC currently indexed for CVE-2016-2402.

CWE Category CWE-295

Published Date Jan 30, 2017

Modified Date May 13, 2026

Exploit Status Not Found

Score 5.9 CVSS v3.1

Exploit Probability (EPSS)

2.25%

Vulnerability Summary

CVE-2016-2402: 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.

Impacted Vendors

squareup 2

Reference Links

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

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

5.9

Attack Vector

NETWORK

Complexity

HIGH

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

4.3

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:M/Au:N/C:N/I:P/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns