Claudio Sanches – Checkout Cielo for WooCommerce <= 1.1.0 — Insufficient Verification of Data Authenticity to Order Payment Status Update

Am I affected?

• Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Claudio Sanches – Checkout Cielo for WooCommerce.
• No admin access? Run a passive check of your site. It reads public files only.
• No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

1. No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
3. Watch Claudio Sanches – Checkout Cielo for WooCommerce to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Lucio Sá.

The Claudio Sanches – Checkout Cielo for WooCommerce plugin for WordPress is vulnerable to unauthorized modification of data due to insufficient payment validation in the update_order_status() function in all versions up to, and including, 1.1.0. This makes it possible for unauthenticated attackers to update the status of orders to paid bypassing payment.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

• Advisorywordfence.com

Timeline

1. Jun 3, 2024

   CVE published

   Severity medium, CVSS 5.3

2. Nov 13, 2026

   Record last updated