CVE-2023-2437CWE-288

UserPro <= 5.1.1 - Authentication Bypass to Administrator

Critical · published November 22, 2023

CVSS v3.1
9.8
EPSS
7%
Percentile
93.9
In the wild
Unconfirmed
What it is

🚨 Unauthenticated access is a massive risk! The UserPro plugin for WordPress has a critical authentication bypass vulnerability, allowing attackers to log in as any user, including admins, just by knowing their email! 🔥 Think of it like a restaurant where anyone can walk in and sit down at any table without checking a reservation — if they know the name on the booking, they're in for a feast! 🍽️ An attacker could exploit this vulnerability to gain complete control over any account on the WordPress site, including the ability to modify settings, remove content, or even lock out legitimate users. This is an absolute nightmare scenario for site administrators and a goldmine for malicious actors!

Put simply

Think of it like a restaurant where anyone can walk in and sit down at any table without checking a reservation — if they know the name on the booking, they're in for a feast! 🍽️ The vulnerability arises from insufficient verification of users during Facebook login, enabling unauthenticated attackers to bypass security and impersonate existing users if they possess the user's email address. This security lapse, combined with other vulnerabilities, makes exploitation alarmingly straightforward.

What to do

An attacker could exploit this vulnerability to gain complete control over any account on the WordPress site, including the ability to modify settings, remove content, or even lock out legitimate users. This is an absolute nightmare scenario for site administrators and a goldmine for malicious actors! Update the UserPro plugin to version 5.1.2 or higher immediately to patch this vulnerability. Additionally, review user access logs and implement tighter security measures on email addresses associated with user accounts. 🛡️ You've got this! By taking these steps, you'll fortify your site against this sneaky vulnerability and keep your community safe! 💪✨

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.06746 · 93.9th percentile
Weakness
CWE-288 · Authentication Bypass Using an Alternate Path or Channel
Published
2023-11-22T15:33Z
EPSS history
Timeline
  • 22 NOV 15:33Z
    UserPro <= 5.1.1 - Authentication Bypass to Administrator
    cvelistv5