{"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":"2026-10-20T10:47:57.162440993Z","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":{"score":0.04723,"percentile":0.91387,"asOf":"2026-09-17"},"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"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2016-6582"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-3m6r-39p3-jq25"},{"type":"WEB","url":"https://github.com/doorkeeper-gem/doorkeeper"},{"type":"WEB","url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/doorkeeper/CVE-2016-6582.yml"},{"type":"WEB","url":"https://web.archive.org/web/20170214021758/http://www.securityfocus.com/bid/92551"},{"type":"WEB","url":"https://web.archive.org/web/20201207202519/http://www.securityfocus.com/archive/1/539268/100/0/threaded"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2016/08/19/2"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-20T10:47:57.162440993Z"}}