Mercado Pago payments for WooCommerce: A security weakness
Mercado Pago payments for WooCommerce is affected by a security weakness. The vulnerable path is reachable without authentication. The resulting impact depends on how the affected component exposes the vulnerable operation. The published affected range is <= 8.7.11.
- Component
- Mercado Pago payments for WooCommerce
- Plugin slug
woocommerce-mercadopago- Affected
- <= 8.7.11
- Safe version
> 8.7.11- Published
- May 06, 2026
- Weakness
- CWE-862 — Missing Authorization
This CVE was published May 06, 2026 and is one of 3 known issues for this plugin.
Update, patch or deactivate.
Update Mercado Pago payments for WooCommerce to a release after 8.7.11, or disable and remove it until a fixed version is available.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The Mercado Pago payments for WooCommerce plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the 'mp_pix_image' WooCommerce API endpoint in all versions up to, and including, 8.7.11. This makes it possible for unauthenticated attackers to retrieve PIX payment QR code images for arbitrary orders. PIX QR codes contain sensitive merchant information including PIX keys (which may be CPF/CNPJ personal identifiers), transaction amounts, merchant name and city, and MercadoPago transaction references.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N