CVE-2026-91075
Received Received - Intake

Unauthenticated Payment Confirmation Forgery in Eupago Gateway for WooCommerce

Publication date: 2026-11-03

Last updated on: 2026-11-03

Assigner: WPScan

Description
The Eupago Gateway For Woocommerce WordPress plugin from 4.5.0 through 4.7.5 does not verify the authenticity of incoming payment-confirmation webhook requests in some configurations, allowing unauthenticated attackers to forge a payment confirmation and mark a pending order as paid without paying for it.

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Meta Information

Published
2026-11-03
Last Modified
2026-11-03
Generated
2026-11-03
AI Q&A
2026-11-03
EPSS Evaluated
N/A
NVD
CVE-2026-91075
EUVD
EUVD-2026-115719

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Unknown Eupago Gateway For Woocommerce 4.5.0

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability affects the Eupago Gateway For Woocommerce WordPress plugin versions 4.5.0 through 4.7.5. It allows unauthenticated attackers to forge payment confirmations without making an actual payment. The plugin fails to verify the authenticity of incoming payment-confirmation webhook requests in certain configurations, enabling attackers to mark pending orders as paid fraudulently.

Impact Analysis

This vulnerability can lead to financial losses as attackers may trick the system into marking orders as paid without actual payment. Merchants using the vulnerable plugin versions could ship products without receiving payment, resulting in direct financial harm. It also undermines trust in the payment process and may require manual verification of orders.

Mitigation Strategies

Immediately update the Eupago Gateway For Woocommerce plugin to the latest version if available. If no update exists, consider disabling the plugin until a patch is released. Monitor incoming payment-confirmation webhook requests for suspicious activity and implement additional authentication checks for webhook endpoints.

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