CVE-2025-14440

critical

Description

The JAY Login & 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.

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/928877a6-eeeb-4ed5-900b-9b1560e1bf87?source=cve

https://plugins.trac.wordpress.org/changeset/3418754/

https://plugins.trac.wordpress.org/browser/jay-login-register/tags/2.4.01/includes/jay-login-register-user-switching.php#L98

Details

Source: Mitre, NVD

Published: 2025-12-13

Updated: 2026-04-15

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00139