{"id":"CVE-2025-14440","aliases":["EUVD-2025-203210","GHSA-7wgv-8jv9-78p4"],"status":"published","title":"JAY Login \u0026 Register \u003c= 2.4.01 - Authentication Bypass via Cookie","description":"The JAY Login \u0026 Register plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 2.4.01. This is due to incorrect authentication checking in the 'jay_login_register_process_switch_back' function with the 'jay_login_register_process_switch_back' cookie value. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the user id.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00752,"percentile":0.55358,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-565"],"published":"2025-12-13T04:31:30Z","modified":"2026-10-07T20:10:01Z","exploits":[{"source":"pocgithub","id":"Nxploited/CVE-2025-14440","title":"Nxploited/CVE-2025-14440","date":"2025-12-18","url":"https://github.com/Nxploited/CVE-2025-14440"}],"products":[{"vendor":"jayarsiech","product":"jay login \u0026 register"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/928877a6-eeeb-4ed5-900b-9b1560e1bf87?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/jay-login-register/tags/2.4.01/includes/jay-login-register-user-switching.php#L98"},{"url":"https://plugins.trac.wordpress.org/changeset/3418754/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-14440"},{"url":"https://plugins.trac.wordpress.org/changeset/3418754"},{"url":"https://github.com/advisories/GHSA-7wgv-8jv9-78p4"}],"sources":{"cve":[{"id":"CVE-2025-14440","title":"JAY Login \u0026 Register \u003c= 2.4.01 - Authentication Bypass via Cookie","description":"The JAY Login \u0026 Register plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 2.4.01. This is due to incorrect authentication checking in the 'jay_login_register_process_switch_back' function with the 'jay_login_register_process_switch_back' cookie value. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the user id.","status":"published","published":"2025-12-13T04:31:30.111Z","modified":"2026-04-08T17:09:27.946Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-565"],"updated_at":"2026-11-02T14:32:28.621398Z"}],"euvd":[{"id":"EUVD-2025-203210","description":"The JAY Login \u0026 Register plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 2.4.01. This is due to incorrect authentication checking in the 'jay_login_register_process_switch_back' function with the 'jay_login_register_process_switch_back' cookie value. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the user id.","status":"published","published":"2025-12-13T04:31:30Z","modified":"2026-04-08T17:09:27Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T19:24:49.011416Z"}],"ghsa":[{"id":"GHSA-7wgv-8jv9-78p4","title":"The JAY Login \u0026 Register plugin for WordPress is vulnerable to authentication bypass in versions...","description":"The JAY Login \u0026 Register plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 2.4.01. This is due to incorrect authentication checking in the 'jay_login_register_process_switch_back' function with the 'jay_login_register_process_switch_back' cookie value. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the user id.","status":"published","published":"2025-12-13T18:30:21Z","modified":"2026-04-08T18:34:02Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-565"],"updated_at":"2026-11-02T15:07:16.301048Z"}],"nvd":[{"id":"CVE-2025-14440","description":"The JAY Login \u0026 Register plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 2.4.01. This is due to incorrect authentication checking in the 'jay_login_register_process_switch_back' function with the 'jay_login_register_process_switch_back' cookie value. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the user id.","status":"published","published":"2025-12-13T16:16:49.57Z","modified":"2026-10-07T20:10:01.97Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-565"],"updated_at":"2026-11-02T14:11:50.400521Z"}]}}