{"id":"CVE-2015-8314","aliases":["GHSA-746g-3gfp-hfhw"],"url":"https://o3.security/vulnerability/CVE-2015-8314","summary":"Devise Gem for Ruby Unauthorized Access Using \"Remember Me\" Cookie","details":"Devise version before 3.5.4 uses cookies to implement a \"Remember me\" functionality. However, it generates the same cookie for all devices. If an attacker manages to steal a remember me cookie and the user does not change the password frequently, the cookie can be used to gain access to the application indefinitely.\n","published":"2023-12-12T17:15:07Z","modified":"2026-04-10T03:45:31.009362Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"RubyGems","name":"devise","fixedVersion":"3.5.4"}],"fix":{"url":"https://github.com/heartcombo/devise/commit/c92996646aba2d25b2c3e235fe0c4f1a84b70d24","label":"heartcombo/devise@c929966"},"references":[{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-746g-3gfp-hfhw"},{"type":"ADVISORY","url":"https://rubysec.com/advisories/CVE-2015-8314/"},{"type":"FIX","url":"https://github.com/heartcombo/devise/commit/c92996646aba2d25b2c3e235fe0c4f1a84b70d24"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2015-8314"},{"type":"PACKAGE","url":"https://github.com/heartcombo/devise"},{"type":"WEB","url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/devise/CVE-2015-8314.yml"},{"type":"WEB","url":"https://rubysec.com/advisories/CVE-2015-8314"},{"type":"WEB","url":"http://blog.plataformatec.com.br/2016/01/improve-remember-me-cookie-expiration-in-devise"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-04-10T03:45:31.009362Z"}}