CVE-2025-14440 - CVE House
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Status published Critical CVE-2025-14440

JAY Login & Register <= 2.4.01 - Authentication Bypass via Cookie

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Kenneth Dunn

References

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JAY Login & Register <= 2.6.03 - Unauthenticated Privilege Escalation via jay_login_register_ajax_create_final_user
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Affected Vendor

Affected Software

JAY Login & Register
Vulnerable Versions:
0

Timeline

Official Publish: December 13th, 2025
Last Modified: April 8th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-565

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.