JAY Login & Register <= 2.4.01 - Authentication Bypass via Cookie
| CVE | CVE-2025-14440 |
|---|---|
| CVSS | 9.8 (Critical) |
| Publicly Published | December 12, 2025 |
| Last Updated | December 19, 2025 |
| Researcher |
kr0d
|
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.
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Vulnerability Details for JAY Login & Register
| Software Type | Plugin |
|---|---|
| Software Slug | jay-login-register (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 2.5.01, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in JAY Login & Register
| # | Title | CVE ID | CVSS | Researchers | Date |
|---|---|---|---|---|---|
| 1 | JAY Login & Register <= 2.6.03 - Authenticated (Subscriber+) Privilege Escalation via jay_panel_ajax_update_profile | CVE-2025-15100 | Sarawut Poolkhet (MisterHelloz) | February 7, 2026 | |
| 2 | JAY Login & Register <= 2.6.03 - Unauthenticated Privilege Escalation via jay_login_register_ajax_create_final_user | CVE-2025-15027 | andrea bocchetti | February 7, 2026 |
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