{"id":"CVE-2016-6582","aliases":["GHSA-3m6r-39p3-jq25"],"url":"https://o3.security/vulnerability/CVE-2016-6582","summary":"Doorkeeper is vulnerable to replay attacks","details":"The Doorkeeper gem before 4.2.0 for Ruby might allow remote attackers to conduct replay attacks or revoke arbitrary tokens by leveraging failure to implement the OAuth 2.0 Token Revocation specification.","published":"2017-01-23T21:59:02.110Z","modified":"2026-07-08T12:53:05.210593Z","cvss":{"score":9.1,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"RubyGems","name":"doorkeeper","fixedVersion":"4.2.0"}],"fix":null,"references":[{"type":"WEB","url":"http://www.securityfocus.com/archive/1/539268/100/0/threaded"},{"type":"ADVISORY","url":"http://packetstormsecurity.com/files/138430/Doorkeeper-4.1.0-Token-Revocation.html"},{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/92551"},{"type":"FIX","url":"http://seclists.org/fulldisclosure/2016/Aug/105"},{"type":"FIX","url":"https://github.com/doorkeeper-gem/doorkeeper/issues/875"},{"type":"FIX","url":"https://github.com/doorkeeper-gem/doorkeeper/releases/tag/v4.2.0"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T12:53:05.210593Z"}}