CVE-2025-14440 (CVSS 9.8)

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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CVSS v3.1 Score

9.8

CRITICAL

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

Weakness Type (CWE)

CWE-565 CWE-565

References

Other References

https://plugins.trac.wordpress.org/browser/jay-login-register/tags/2.4.01/includes/jay-login-register-user-switching.php#L98 https://plugins.trac.wordpress.org/changeset/3418754/ https://www.wordfence.com/threat-intel/vulnerabilities/id/928877a6-eeeb-4ed5-900b-9b1560e1bf87?source=cve

Frequently Asked Questions

What is CVE-2025-14440? +

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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-14440? +

CVE-2025-14440 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

How do I check if I'm vulnerable to CVE-2025-14440? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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