🚨 CVE-2025-30772 - Privilege Escalation in WPC Smart Upsell Funnel for WooCommerce <= 3.0.4

📅 Published: March 27, 2025
🔐 CVSS Score: 8.8 (High)
🔥 CWE-862: Missing Authorization

🐞 Vulnerability Summary

A Missing Authorization vulnerability in the WPC Smart Upsell Funnel for WooCommerce plugin allows authenticated users with minimal privileges (e.g., subscriber) to escalate their privileges by modifying arbitrary WordPress options via a vulnerable AJAX endpoint.

This affects versions:

From: unknown  
Through: 3.0.4

⚠️ What Can Be Exploited?

The plugin registers the following unauthenticated-privileged AJAX endpoint:

action: wpcuf_import_export_save

This endpoint accepts a POST request and calls update_option() directly using values from the user without checking their permission.

💥 Real-World Impact

An attacker with a basic account (even subscriber) can:

. Modify this WordPress option:

📌 After this, any new user that registers will become an Administrator by default.

🧪 Proof-of-Concept (PoC) Script

This script:

1. Logs in to the target WordPress site.
2. Extracts the nonce from the vulnerable admin page.
3. Sends a crafted request to modify default_role to "administrator".

🔧 Usage

usage: CVE-2025-30772.py [-h] -u URL -un USERNAME -p PASSWORD

WordPress Privilege Escalation Exploit - CVE-2025-30772 # By Nxploited | Khaled ALenazi,

options:
  -h, --help            show this help message and exit
  -u URL, --url URL     Target base URL
  -un USERNAME, --username USERNAME
                        WordPress username
  -p PASSWORD, --password PASSWORD
                        WordPress password

📂 Arguments

📸 Visual Example

Before visiting:
http://target.com/wp-admin/options.php

default_role = subscriber

After exploitation:

default_role = administrator ✅

🛡️ Recommendation

Update the plugin immediately to a patched version once available.
Until then, restrict access to /wp-admin/admin-ajax.php and monitor default_role.

✍️ About

This PoC was created by Nxploited - Khaled Alenazi for ethical and educational purposes only.