CVE-2023-2027 CRITICAL

CVE-2023-2027: ZM Ajax Login & Register <= 2.0.2 - Authentication Bypass

Vendor Zanematthew

Product ZM Ajax Login & Register

Weakness CWE-288

Published April 15, 2023

Last update April 8, 2026

View on NVD All CVEs

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 ZM Ajax Login & Register plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 2.0.2. This is due to insufficient verification on the user being supplied during a Facebook login through the plugin. 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 username.

Key dates

02Disclosure timeline

April 15, 2023 CVE published

April 8, 2026 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2023-2027 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/288.html

Related vulnerabilities

04Related CVE

CVE-2026-8321 inkeep agents runAuth Middleware runAuth.ts createDevContext authentication bypass CVE-2026-40790 WordPress WP SMS plugin <= 7.2.1 - Sensitive Data Exposure vulnerability CVE-2026-35422 Windows TCP/IP Driver Security Feature Bypass Vulnerability CVE-2026-49764 WordPress RegistrationMagic plugin <= 6.0.8.6 - Broken Authentication vulnerability CVE-2026-7458 User Verification by PickPlugins <= 2.0.46 - Unauthenticated Authentication Bypass via OTP Verification REST API Endpoint