CVE-2026-73353 in Gateway for WooCommerce Plugin
Summary
by MITRE • 08/13/2026
Unauthenticated Broken Access Control in Revolut Gateway for WooCommerce < 4.22.10 versions.
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Analysis
by VulDB Data Team • 08/13/2026
The vulnerability identified in Revolut Gateway for WooCommerce versions prior to 4.22.10 represents a critical broken access control flaw that allows unauthenticated attackers to exploit the payment processing system. This issue falls under the CWE-284 access control weakness category, specifically manifesting as improper access control mechanisms within the plugin's authentication flow. The vulnerability stems from insufficient validation of user permissions and authentication status during sensitive payment operations, creating a pathway for malicious actors to manipulate payment transactions without proper authorization.
The technical implementation of this flaw enables attackers to bypass the standard authentication requirements that should normally validate user credentials before allowing access to payment processing functions. This weakness occurs at the gateway level where WooCommerce integrates with Revolut's payment infrastructure, specifically affecting how the plugin handles transaction requests and order processing. Attackers can leverage this vulnerability to manipulate payment data, potentially redirecting funds or altering transaction details without being authenticated as legitimate users.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it creates potential for financial fraud and data manipulation within e-commerce transactions. Retailers using affected plugin versions face significant risk of monetary loss, customer trust erosion, and potential regulatory compliance violations. The vulnerability affects the core payment processing functionality of WooCommerce stores that rely on Revolut Gateway integration, making it particularly dangerous for businesses handling high volumes of online payments.
Security professionals should note this vulnerability's alignment with ATT&CK technique T1213.002 for data manipulation and T1071.004 for application layer protocol usage. The flaw demonstrates how third-party plugin integrations can introduce critical security gaps in e-commerce platforms, emphasizing the importance of thorough security auditing for all components. Organizations should immediately implement patch management procedures to upgrade to Revolut Gateway for WooCommerce version 4.22.10 or later, which contains the necessary access control improvements.
Mitigation strategies include implementing network-level firewalls to restrict access to payment processing endpoints, enabling additional authentication layers, and conducting regular security assessments of all e-commerce plugins. The vulnerability highlights the necessity of following OWASP Top Ten security practices, particularly focusing on secure authentication mechanisms and proper input validation. Organizations should also consider implementing transaction monitoring systems that can detect anomalous payment patterns indicative of exploitation attempts.
Additional protective measures involve configuring web application firewalls to monitor for suspicious access patterns targeting payment gateway endpoints, establishing robust logging mechanisms for payment transactions, and maintaining comprehensive backup procedures for payment data recovery. The security community should recognize this vulnerability as a prime example of how seemingly minor authentication gaps can lead to significant financial consequences in e-commerce environments. Regular security updates and vulnerability assessments remain crucial for protecting online payment systems against evolving attack vectors.
The remediation process requires immediate attention from system administrators, with comprehensive testing of the updated plugin version to ensure compatibility with existing WooCommerce installations. Security teams should also conduct thorough penetration testing to verify that access control mechanisms function correctly after patch application. This vulnerability serves as a reminder of the critical importance of maintaining up-to-date security patches across all components of e-commerce infrastructure, particularly those handling sensitive financial transactions.