CVE-2025-15027 CRITICAL

CVE-2025-15027: JAY Login & Register <= 2.6.03 - Unauthenticated Privilege Escalation via jay_login_register_ajax_create_final_user

Vendor Jayarsiech
Product JAY Login & Register
Weakness CWE-269
Published February 8, 2026
Last update April 8, 2026

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Explanation of Vulnerability in Simple Terms

02Summary

JAY Login & Register versions 2.6.03 and earlier contain a privilege management flaw that allows unauthenticated attackers to gain full control over the site without user interaction. The vulnerability affects all versions from release, and no patch is currently available. Site administrators should immediately disable or remove the plugin until an update is released.

What an attacker can do

03Attacker Capabilities

Read, modify, or delete any data on the site; create admin accounts; run their own code.

Potential impact on your site

04Site Impact

Complete compromise of the site and all user data; attacker can take full control without warning.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

February 8, 2026 CVE published
April 8, 2026 Record updated