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.
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Fixes

Solution

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Workaround

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History

Sat, 13 Dec 2025 04:45:00 +0000

Type Values Removed Values Added
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.
Title JAY Login & Register <= 2.4.01 - Authentication Bypass via Cookie
Weaknesses CWE-565
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2025-12-13T04:31:30.111Z

Reserved: 2025-12-10T12:22:08.723Z

Link: CVE-2025-14440

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2025-12-13T16:16:49.570

Modified: 2025-12-13T16:16:49.570

Link: CVE-2025-14440

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses