{"id":"CVE-2019-16109","aliases":["EUVD-2019-0664","GHSA-fcjw-8rhj-gwwc","UBUNTU-CVE-2019-16109"],"status":"published","title":"Authentication Bypass in Devise","description":"An issue was discovered in Plataformatec Devise before 4.7.1. It confirms accounts upon receiving a request with a blank confirmation_token, if a database record has a blank value in the confirmation_token column. (However, there is no scenario within Devise itself in which such database records would exist.)","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01832,"percentile":0.79035,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-284"],"published":"2019-09-08T19:57:27Z","modified":"2026-10-20T10:50:47Z","fixes":[{"ecosystem":"RubyGems","package":"devise","fixed_in":["4.7.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"RubyGems","package":"devise","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.7.1"}]}]},{"source":"osv","ecosystem":"RubyGems","package":"devise","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.7.1"}]}],"versions":["0.1.0","0.1.1","0.2.0","0.2.1","0.2.2","0.2.3","0.3.0","0.4.0","0.4.1","0.4.2","0.4.3","0.5.0","0.5.1","0.5.2","0.5.3","0.5.4","0.5.5","0.5.6","0.6.0","0.6.1","0.6.2","0.6.3","0.7.0","0.7.1","0.7.2","0.7.3","0.7.4","0.7.5","0.8.0","0.8.1","0.8.2","0.9.0","0.9.1","0.9.2","1.0.0","1.0.1","1.0.10","1.0.11","1.0.2","1.0.3","1.0.4","1.0.5","1.0.6","1.0.7","1.0.8","1.0.9","1.1.0","1.1.1","1.1.2","1.1.3","1.1.4","1.1.5","1.1.6","1.1.7","1.1.8","1.1.9","1.1.pre","1.1.pre2","1.1.pre3","1.1.pre4","1.1.rc0","1.1.rc1","1.1.rc2","1.2.0","1.2.1","1.2.rc","1.2.rc2","1.3.0","1.3.1","1.3.2","1.3.3","1.3.4","1.4.1","1.4.2","1.4.3","1.4.5","1.4.7","1.4.8","1.4.9","1.5.0","1.5.0.rc1","1.5.1","1.5.2","1.5.3","1.5.4","2.0.0","2.0.0.rc","2.0.0.rc2","2.0.1","2.0.2","2.0.4","2.0.5","2.0.6","2.1.0","2.1.0.rc","2.1.0.rc2","2.1.2","2.1.3","2.1.4","2.2.0","2.2.0.rc","2.2.1","2.2.2","2.2.3","2.2.4","2.2.5","2.2.6","2.2.7","2.2.8","3.0.0","3.0.0.rc","3.0.1","3.0.2","3.0.3","3.0.4","3.1.0","3.1.0.rc2","3.1.1","3.1.2","3.2.0","3.2.1","3.2.2","3.2.3","3.2.4","3.3.0","3.4.0","3.4.1","3.5.1","3.5.10","3.5.2","3.5.3","3.5.4","3.5.5","3.5.6","3.5.7","3.5.8","3.5.9","4.0.0","4.0.0.rc1","4.0.0.rc2","4.0.1","4.0.2","4.0.3","4.1.0","4.1.1","4.2.0","4.2.1","4.3.0","4.4.0","4.4.1","4.4.2","4.4.3","4.5.0","4.6.0","4.6.1","4.6.2","4.7.0"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"ruby-devise","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.5.1-1","3.5.2-1","3.5.2-2","3.5.2-3","3.5.6-2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"ruby-devise","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2.0-1","4.3.0-1","4.4.3-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"ruby-devise","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.5.0-3","4.6.2-2","4.7.1-2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"ruby-devise","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.7.3-2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"ruby-devise","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.8.1-1","4.9.2-1","4.9.3-1"]}],"products":[{"vendor":"plataformatec","product":"devise"}],"references":[{"url":"https://github.com/plataformatec/devise/pull/5132","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web","report"]},{"url":"https://github.com/plataformatec/devise/issues/5071","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web","report"]},{"url":"https://github.com/plataformatec/devise/compare/v4.7.0...v4.7.1","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-16109","tags":["advisory"]},{"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/devise/CVE-2019-16109.yml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-fcjw-8rhj-gwwc"},{"url":"https://github.com/plataformatec/devise","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2019-16109","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-16109","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2019-16109","description":"An issue was discovered in Plataformatec Devise before 4.7.1. It confirms accounts upon receiving a request with a blank confirmation_token, if a database record has a blank value in the confirmation_token column. (However, there is no scenario within Devise itself in which such database records would exist.)","status":"published","published":"2019-09-08T19:57:27Z","modified":"2024-08-05T01:03:32.796Z","updated_at":"2026-11-02T14:32:23.189113Z"}],"euvd":[{"id":"EUVD-2019-0664","description":"An issue was discovered in Plataformatec Devise before 4.7.1. It confirms accounts upon receiving a request with a blank confirmation_token, if a database record has a blank value in the confirmation_token column. (However, there is no scenario within Devise itself in which such database records would exist.)","status":"published","published":"2019-09-08T19:57:27Z","modified":"2024-08-05T01:03:32Z","updated_at":"2026-11-03T02:40:34.569316Z"}],"ghsa":[{"id":"GHSA-fcjw-8rhj-gwwc","title":"Authentication Bypass in Devise","description":"An issue was discovered in Plataformatec Devise before 4.7.1. It confirms accounts upon receiving a request with a blank confirmation_token, if a database record has a blank value in the confirmation_token column. (However, there is no scenario within Devise itself in which such database records would exist.)","status":"published","published":"2019-09-11T23:06:57Z","modified":"2023-11-10T05:05:58Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:37:19.438667Z"}],"nvd":[{"id":"CVE-2019-16109","description":"An issue was discovered in Plataformatec Devise before 4.7.1. It confirms accounts upon receiving a request with a blank confirmation_token, if a database record has a blank value in the confirmation_token column. (However, there is no scenario within Devise itself in which such database records would exist.)","status":"published","published":"2019-09-08T20:15:10.487Z","modified":"2026-06-17T02:21:41.457Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:05:25.691233Z"}],"osv":[{"id":"CVE-2019-16109","description":"An issue was discovered in Plataformatec Devise before 4.7.1. It confirms accounts upon receiving a request with a blank confirmation_token, if a database record has a blank value in the confirmation_token column. (However, there is no scenario within Devise itself in which such database records would exist.)","status":"published","published":"2019-09-08T20:15:10.487Z","modified":"2026-10-20T10:50:47.083528991Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:11.361782Z"},{"id":"GHSA-fcjw-8rhj-gwwc","title":"Authentication Bypass in Devise","description":"An issue was discovered in Plataformatec Devise before 4.7.1. It confirms accounts upon receiving a request with a blank confirmation_token, if a database record has a blank value in the confirmation_token column. (However, there is no scenario within Devise itself in which such database records would exist.)","status":"published","published":"2019-09-11T23:06:57Z","modified":"2024-02-16T08:15:01.119563Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:46:46.39441Z"},{"id":"UBUNTU-CVE-2019-16109","description":"An issue was discovered in Plataformatec Devise before 4.7.1. It confirms accounts upon receiving a request with a blank confirmation_token, if a database record has a blank value in the confirmation_token column. (However, there is no scenario within Devise itself in which such database records would exist.)","status":"published","published":"2019-09-08T20:15:00Z","modified":"2026-01-20T16:47:27.802171Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:20.325378Z"}]}}