CVE-2026-3208: CWE-862 Missing Authorization in mercadopago Mercado Pago payments for WooCommerce
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.
AI Analysis
Technical Summary
CVE-2026-3208 is a missing authorization vulnerability (CWE-862) in the Mercado Pago payments for WooCommerce WordPress plugin. The issue arises because the 'mp_pix_image' API endpoint does not perform a capability check, allowing unauthenticated attackers to retrieve sensitive PIX payment QR code images associated with arbitrary orders. These QR codes expose merchant-sensitive data including PIX keys, transaction details, and merchant identifiers. The vulnerability affects all versions up to 8.7.11. No known exploits are reported in the wild, and no official fix or patch has been published as of the data provided.
Potential Impact
An attacker can access sensitive merchant information without authentication by retrieving PIX payment QR codes. This includes personal identifiers (such as CPF/CNPJ), transaction amounts, merchant names, cities, and MercadoPago transaction references. While the vulnerability does not impact integrity or availability, the confidentiality breach of sensitive payment data poses privacy and potential fraud risks.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider restricting access to the 'mp_pix_image' API endpoint through web server or application-level controls to prevent unauthorized access. Monitoring for unusual access patterns to this endpoint may also help detect exploitation attempts.
CVE-2026-3208: CWE-862 Missing Authorization in mercadopago Mercado Pago payments for WooCommerce
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-3208 is a missing authorization vulnerability (CWE-862) in the Mercado Pago payments for WooCommerce WordPress plugin. The issue arises because the 'mp_pix_image' API endpoint does not perform a capability check, allowing unauthenticated attackers to retrieve sensitive PIX payment QR code images associated with arbitrary orders. These QR codes expose merchant-sensitive data including PIX keys, transaction details, and merchant identifiers. The vulnerability affects all versions up to 8.7.11. No known exploits are reported in the wild, and no official fix or patch has been published as of the data provided.
Potential Impact
An attacker can access sensitive merchant information without authentication by retrieving PIX payment QR codes. This includes personal identifiers (such as CPF/CNPJ), transaction amounts, merchant names, cities, and MercadoPago transaction references. While the vulnerability does not impact integrity or availability, the confidentiality breach of sensitive payment data poses privacy and potential fraud risks.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider restricting access to the 'mp_pix_image' API endpoint through web server or application-level controls to prevent unauthorized access. Monitoring for unusual access patterns to this endpoint may also help detect exploitation attempts.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-02-25T16:20:01.556Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69fac204cbff5d861099ade2
Added to database: 5/6/2026, 4:22:28 AM
Last enriched: 5/6/2026, 4:36:27 AM
Last updated: 5/7/2026, 6:16:40 AM
Views: 16
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