Square Okhttp 2.7.3 certificate Bypass a restriction or similar Vulnerability
10 Jul. 2017
Summary
A vulnerability was discovered in OkHttp that allows an attacker to bypass certificate pinning. OkHttp did not validate that the pinned certificate was in the chain to a trusted certificate authority.
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.