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.
CVSS 3.1MEDIUM 5.9·Network·No auth·No interaction·EPSS 0.0194·Published 2017-01-30·Fixed in 2.7.4, 3.1.2CWE-295