CVE-2025-14440

CRITICAL

JAY Login & Register <2.4.01 - Auth Bypass

Title source: llm

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.

Exploits (1)

nomisec WORKING POC 1 stars

by Nxploited · poc

https://github.com/Nxploited/CVE-2025-14440

View Code ZIP pw:eip

References (3)

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

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

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

Scores

CVSS v3 9.8

EPSS 0.0014

EPSS Percentile 34.5%

Attack Vector NETWORK

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

Details

CWE

CWE-565

Status published

Products (1)

jayarsiech/JAY Login & Register < 2.4.01

Published Dec 13, 2025

Tracked Since Feb 18, 2026