🔐 CVE Alert

CVE-2023-2027

CRITICAL 9.8

ZM Ajax Login & Register <= 2.0.2 - Authentication Bypass

CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th

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.

CWE CWE-288
Vendor zanematthew
Product zm ajax login & register
Published Apr 15, 2023
Last Updated Apr 8, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability

Affected Versions

zanematthew / ZM Ajax Login & Register
0 ≤ 2.0.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/b10d01ec-54ef-456b-9410-ed013343a962?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/zm-ajax-login-register/trunk/src/ALRSocial/ALRSocialFacebook.php#L58

Credits

István Márton