CVE-2023-2027

critical

Description

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.

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/b10d01ec-54ef-456b-9410-ed013343a962?source=cve

https://plugins.trac.wordpress.org/browser/zm-ajax-login-register/trunk/src/ALRSocial/ALRSocialFacebook.php#L58

Details

Source: Mitre, NVD

Published: 2023-04-15

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

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

Severity: Critical

EPSS

EPSS: 0.00254