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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.

PUBLISHED Reserved 2025-12-10 | Published 2025-12-13 | Updated 2025-12-15 | Assigner Wordfence




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

Problem types

CWE-565 Reliance on Cookies without Validation and Integrity Checking

Product status

Default status
unaffected

* (semver)
affected

Timeline

2025-12-12:Disclosed

Credits

Kenneth Dunn finder

References

www.wordfence.com/...-eeeb-4ed5-900b-9b1560e1bf87?source=cve

plugins.trac.wordpress.org/...in-register-user-switching.php

cve.org (CVE-2025-14440)

nvd.nist.gov (CVE-2025-14440)

Download JSON

Data based on CVE®. Copyright © 1999-2025, The MITRE Corporation. All rights reserved.