Critical severity9.8NVD Advisory· Published Dec 13, 2025· Updated Apr 15, 2026

CVE-2025-14440

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.

Affected products

WordPress/Jay Login Registerinferred
Range: <=2.4.01
Package: https://wordpress.org/plugins/jay-login-register

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

plugins.trac.wordpress.org/browser/jay-login-register/tags/2.4.01/includes/jay-login-register-user-switching.phpnvd
plugins.trac.wordpress.org/changeset/3418754/nvd
www.wordfence.com/threat-intel/vulnerabilities/id/928877a6-eeeb-4ed5-900b-9b1560e1bf87nvd

News mentions

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