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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| jayarsiech | JAY Login & Register | ≤ 2.4.01 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
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Nxploited/CVE-2025-14440 ★ 2 · Dec 18, 2025
JAY Login & Register <= 2.4.01 - Authentication Bypass via Cookie
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.