VULNERABILITY INTELLIGENCE

CVE-2023-2437

CVSS score9.8 CRITICAL

EPSS probability6.75%

CISA KEVNot currently listed

Published2023-11-22

Last modified2026-06-17

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

Description

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.

Weakness classification

CWE-287: Improper Authentication
CWE-288: Authentication Bypass Using an Alternate Path or Channel

Primary references

security@wordfence.com — Product
security@wordfence.com — Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 — Product
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory