CVE-2025-14440

CriticalCVSS 9.8/10Last modified Oct 7, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-565

Affected software

No affected versions have been published.

Timeline

Published
Dec 13, 2025
Last modified
Oct 7, 2026
NVD status
Deferred

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CVE-2025-14440: Critical severity, CVSS 9.8 | Vulnix