CVE-2025-14440
JAY Login & Register <= 2.4.01 - Authentication Bypass via Cookie
- State
- Published
- Severity
- 9.8 Critical
- Published
- Dec 13, 2025
- Updated
- Apr 8, 2026
- Reserved
- Dec 10, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | Wordfence |
Weaknesses
- CWE-565 Reliance on Cookies without Validation and Integrity Checking
Affected Products
| Product | Versions |
|---|---|
JAY Login & Registerjayarsiech |
|
References
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