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Critical 9.8Published Dec 12, 2025

CVE-2025-14440JAY Login & Register <= 2.4.01 - Authentication Bypass via Cookie

Updated under an hour ago ()

Does this affect you?

It affects jayarsiech JAY Login & Register. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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.

CVSS
9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-565
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
Wordfence
NVD analysis
Deferred
Record last updated
Apr 8, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
jayarsiech JAY Login & Register
jayarsiech:jay_login_and_register (from the name)
through 2.4.01
CNA record

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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