CVE-2025-66071

5.3 MEDIUM

📋 TL;DR

This CVE describes a Missing Authorization vulnerability in the Custom Order Numbers for WooCommerce WordPress plugin that allows unauthorized users to access functionality intended only for authorized users. It affects all WordPress sites running the plugin version 1.11.0 or earlier. Attackers could exploit this to view or modify order data they shouldn't have access to.

💻 Affected Systems

Products:
  • Custom Order Numbers for WooCommerce WordPress plugin
Versions: All versions up to and including 1.11.0
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Affects all WordPress installations with the vulnerable plugin version installed and activated. No special configuration required for exploitation.

⚠️ Manual Verification Required

This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.

Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).

🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Unauthorized users gain administrative access to WooCommerce order management functions, allowing them to view, modify, or delete customer orders, potentially exposing sensitive customer data and disrupting business operations.

🟠

Likely Case

Low-privileged users or attackers gain access to order management functions beyond their authorization level, potentially viewing customer order details, modifying order statuses, or accessing order history they shouldn't see.

🟢

If Mitigated

Proper access controls prevent unauthorized access, limiting users to only the functions and data they're explicitly authorized to access according to their role.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: LIKELY
Unauthenticated Exploit: ✅ No
Complexity: LOW

Exploitation requires some level of access to the WordPress site but can be performed by users with lower privileges than intended. The vulnerability is in access control logic, making exploitation straightforward once identified.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 1.11.1 or later

Vendor Advisory: https://patchstack.com/database/Wordpress/Plugin/custom-order-numbers-for-woocommerce/vulnerability/wordpress-custom-order-numbers-for-woocommerce-plugin-1-11-0-broken-access-control-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Custom Order Numbers for WooCommerce'. 4. Click 'Update Now' if update is available. 5. Alternatively, download version 1.11.1+ from WordPress.org and manually update.

🔧 Temporary Workarounds

Disable vulnerable plugin

all

Temporarily disable the Custom Order Numbers for WooCommerce plugin until patched

wp plugin deactivate custom-order-numbers-for-woocommerce

Restrict plugin access via .htaccess

linux

Add access restrictions to plugin directory

Order Deny,Allow
Deny from all
Allow from 127.0.0.1

🧯 If You Can't Patch

  • Implement strict role-based access controls in WordPress to limit user permissions
  • Monitor and audit all access to WooCommerce order management functions

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel > Plugins > Custom Order Numbers for WooCommerce > Version. If version is 1.11.0 or lower, you are vulnerable.

Check Version:

wp plugin get custom-order-numbers-for-woocommerce --field=version

Verify Fix Applied:

After updating, verify plugin version shows 1.11.1 or higher in WordPress admin panel.

📡 Detection & Monitoring

Log Indicators:

  • Unauthorized access attempts to WooCommerce order endpoints
  • Users accessing order management functions outside their role permissions
  • Multiple failed authorization attempts followed by successful access

Network Indicators:

  • Unusual patterns of requests to /wp-admin/admin-ajax.php or WooCommerce order endpoints
  • Requests from unauthorized IPs accessing order management functions

SIEM Query:

source="wordpress.log" AND ("custom-order-numbers" OR "woocommerce_order") AND ("unauthorized" OR "permission denied" OR "admin-ajax")

🔗 References

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