Critical severity · published Feb 8, 2026
CVE-2025-15027
JAY Login & Register <= 2.6.03 - Unauthenticated Privilege Escalation via jay_login_register_ajax_create_final_user
9.8
CVSS
0.5%
EPSS
No
On KEV
Description
The JAY Login & Register plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 2.6.03. This is due to the plugin allowing a user to update arbitrary user meta through the 'jay_login_register_ajax_create_final_user' function. This makes it possible for unauthenticated attackers to elevate their privileges to that of an administrator.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JL
JAY Login & Register · jayarsiech
through 2.6.03 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-15027
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-15027
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/jay-login-register/tags/2.5.01/includes/jay-login-register-ajax-handler.php#L788
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/b08198a6-10e8-44ca-a1c5-8d987d85c469?source=cve
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