{"id":"CVE-2019-16109","aliases":["GHSA-fcjw-8rhj-gwwc"],"url":"https://o3.security/vulnerability/CVE-2019-16109","summary":"Authentication Bypass in Devise","details":"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.)","published":"2019-09-08T20:15:10.487Z","modified":"2026-08-27T08:15:18.553473Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"RubyGems","name":"devise","fixedVersion":"4.7.1"}],"fix":{"url":"https://github.com/plataformatec/devise/pull/5132","label":"plataformatec/devise#5132"},"references":[{"type":"ADVISORY","url":"https://github.com/plataformatec/devise/compare/v4.7.0...v4.7.1"},{"type":"ADVISORY","url":"https://github.com/plataformatec/devise/issues/5071"},{"type":"FIX","url":"https://github.com/plataformatec/devise/pull/5132"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2019-16109"},{"type":"PACKAGE","url":"https://github.com/plataformatec/devise"},{"type":"WEB","url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/devise/CVE-2019-16109.yml"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-27T08:15:18.553473Z"}}