{"id":"CVE-2019-9837","aliases":["GHSA-vv4c-g6q7-p3q7"],"url":"https://o3.security/vulnerability/CVE-2019-9837","summary":"Doorkeeper-openid_connect contains Open Redirect","details":"Doorkeeper::OpenidConnect (aka the OpenID Connect extension for Doorkeeper) 1.4.x and 1.5.x before 1.5.4 has an open redirect via the redirect_uri field in an OAuth authorization request (that results in an error response) with the 'openid' scope and a prompt=none value. This allows phishing attacks against the authorization flow.","published":"2019-03-21T16:01:17.280Z","modified":"2026-07-08T19:02:57.670720Z","cvss":{"score":6.1,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"RubyGems","name":"doorkeeper-openid_connect","fixedVersion":"1.5.4"}],"fix":{"url":"https://github.com/doorkeeper-gem/doorkeeper-openid_connect/pull/66","label":"doorkeeper-gem/doorkeeper-openid_connect#66"},"references":[{"type":"ADVISORY","url":"https://github.com/doorkeeper-gem/doorkeeper-openid_connect/blob/master/CHANGELOG.md"},{"type":"ADVISORY","url":"https://github.com/doorkeeper-gem/doorkeeper-openid_connect/issues/61"},{"type":"FIX","url":"https://github.com/doorkeeper-gem/doorkeeper-openid_connect/pull/66"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T19:02:57.670720Z"}}