{"id":"CVE-2016-11086","aliases":["GHSA-7359-3c6r-hfc2"],"url":"https://o3.security/vulnerability/CVE-2016-11086","summary":"Improper Certificate Validation in oauth ruby gem","details":"lib/oauth/consumer.rb in the oauth-ruby gem through 0.5.4 for Ruby does not verify server X.509 certificates if a certificate bundle cannot be found, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information.","published":"2020-09-24T20:15:12.257Z","modified":"2026-10-20T10:47:26.005077438Z","cvss":{"score":7.4,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"RubyGems","name":"oauth","fixedVersion":"0.5.5"}],"fix":{"url":"https://github.com/oauth-xx/oauth-ruby/commit/eb5b00a91d4ef0899082fdba929c34ccad6d4ccb","label":"oauth-xx/oauth-ruby@eb5b00a"},"references":[{"type":"EVIDENCE","url":"https://github.com/oauth-xx/oauth-ruby/issues/137"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2016-11086"},{"type":"WEB","url":"https://github.com/oauth-xx/oauth-ruby/commit/eb5b00a91d4ef0899082fdba929c34ccad6d4ccb"},{"type":"PACKAGE","url":"https://github.com/oauth-xx/oauth-ruby"},{"type":"WEB","url":"https://github.com/oauth-xx/oauth-ruby/releases/tag/v0.5.5"},{"type":"WEB","url":"https://rubygems.org/gems/oauth"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-20T10:47:26.005077438Z"}}