In recent security assessments, researchers have identified a critical vulnerability in the KaineLabs Youzify – BuddyPress community, user profile, social network, and membership plugin for WordPress websites. The vulnerability, tagged as CVE-2023-47191, threatens the security of WordPress sites that use the Youzify plugin all the way through version 1.2.2. In this post, we'll take a detailed look at this vulnerability, understand how it works, and explore potential mitigation steps for website administrators.

Vulnerability Summary

The CVE-2023-47191 vulnerability allows attackers to bypass authorization mechanisms by manipulating user-controlled keys. Consequently, attackers can elevate their privileges and gain unauthorized access to restricted areas and sensitive functionalities within WordPress websites.

Affected Software

- Name: KaineLabs Youzify – BuddyPress Community, User Profile, Social Network & Membership Plugin for WordPress
- Version: n/a through 1.2.2

Exploit Details

The vulnerability exists within a user-controlled, '{API_KEY}' value that website administrators use to integrate Youzify with the rest of their website. Malicious actors can exploit this value to tamper with normal authentication mechanisms and grant themselves unauthorized access to critical sections of a WordPress website.

Here's a sample code snippet to demonstrate the vulnerability

if ( isset( $_GET['{API_KEY}'] ) {

  if ( validate_key( $_GET['{API_KEY}'] ) ) {
    // Authentication and access granted
  } else {
    // Authentication failure and access denied


function validate_key( $key ) {
  // Validate API key from $_GET array
  return mysqli_query( "SELECT * FROM keys_table WHERE api_key = '" . $key . "'", $db_conn );

The code snippet above queries an API key value from the database and checks if it exists within the request parameters. A successful match grants access to protected sections of the website. However, attackers can manipulate this '{API_KEY}' value to bypass the validation check and gain unauthorized access to protected resources.

Original References

1. CVE-2023-47191 - National Vulnerability Database
2. KaineLabs Security Advisory - Patch for CVE-2023-47191 Vulnerability

Mitigation Steps

The KaineLabs development team has promptly addressed this vulnerability and released an updated version of the plugin that patches the critical security flaw.

Here are the steps that website administrators should take

1. Update the Youzify plugin: Log in to your WordPress administration dashboard, navigate to the 'Plugins' section, find the Youzify plugin, and click 'Update now'.
2. Validate the update: Ensure the plugin's version number is equal to or greater than 1.2.3, confirming that it is no longer vulnerable to CVE-2023-47191.
3. Review user access: Examine the site's user base to identify any unauthorized admins or users with elevated privileges.
4. Monitor activity logs: Keep an eye on activity logs to detect suspicious activity based on logins, file uploads, or other unauthorized access attempts.

By following these mitigation steps, website administrators can significantly reduce the risk of attackers exploiting the CVE-2023-47191 vulnerability and jeopardizing the security of their WordPress websites.

In conclusion, the CVE-2023-47191 vulnerability poses a severe threat to WordPress websites using the Youzify plugin. Website administrators should act swiftly and apply the necessary steps to mitigate the risk. Additionally, always staying up-to-date with the latest security patches and maintaining a proactive approach to security will help protect your WordPress website against future threats.


Published on: 12/21/2023 19:15:11 UTC
Last modified on: 12/30/2023 03:20:37 UTC