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Tool Directory

CVE-2023-2437

CriticalPublished

UserPro <= 5.1.1 - Authentication Bypass to Administrator

Published: Nov 22, 2023
Updated: Apr 8, 2026
Assigning CNA: Wordfence
Evidence observed: Aug 8, 2026

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

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

EPSS probability estimate

6.7%

Low · next 30 days

Percentile: 93.7%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

The UserPro plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 5.1.1. 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 email. An attacker can leverage CVE-2023-2448 and CVE-2023-2446 to get the user's email address to successfully exploit this vulnerability.

Sources

CVE-2023-2437Exploit
Exploit tool for CVE-2023-2437 targeting UserPro <= 5.1.1 authentication bypass, allowing attackers to gain admin access and create new administrators.

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