WordPress Plugin Vulnerabilities

Mercado Pago payments for WooCommerce < 8.9.1 - Unauthenticated Insecure Direct Object Reference

Description

The Mercado Pago payments for WooCommerce plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 8.9.0 due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to perform an unauthorized action.

Affects Plugins

Plugin icon
woocommerce-mercadopago
Fixed in 8.9.1

References

CVE
CVE-2026-28180
URL
https://www.wordfence.com/threat-intel/vulnerabilities/id/0e62203e-b1e3-409c-b07a-3a88bee87e99

Classification

Type
IDOR
OWASP top 10
A5: Broken Access Control
CWE
CWE-639
CVSS
5.3 (medium)

Miscellaneous

Original Researcher
Ananda Dhakal
Verified
No
WPVDB ID
0c7f7798-c81d-4aa5-81e5-29322ae7c42d

Timeline

Publicly Published
2026-08-05 (about 19 days ago)
Added
2026-08-13 (about 10 days ago)
Last Updated
2026-08-13 (about 10 days ago)

Other

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2025-04-14
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2025-04-01
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2026-06-08
Title
6Storage Rentals <= 2.22.0 - Unauthenticated Insecure Direct Object Reference to Arbitrary User Disclosure and Modification via 'userId' Parameter
Published
2025-07-31
Title
Service Finder Bookings < 6.1 - Authentication Bypass via User Switch Cookie
Published
2026-04-23
Title
Booking Calendar Contact Form < 1.2.64 - Authenticated (Subscriber+) Insecure Direct Object Reference to Calendar Takeover