CVE-2026-0942 in Rede Itaú for WooCommerce Plugin
Summary
by MITRE • 01/16/2026
The Rede Itaú for WooCommerce — Payment PIX, Credit Card and Debit plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the clearOrderLogs() function in all versions up to, and including, 5.1.2. This makes it possible for unauthenticated attackers to delete the Rede Order Logs metadata from all WooCommerce orders.
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Analysis
by VulDB Data Team • 01/17/2026
The CVE-2026-0942 vulnerability affects the Rede Itaú for WooCommerce plugin, a payment processing solution that integrates PIX, credit card, and debit card capabilities into WordPress e-commerce environments. This plugin serves as a critical component for businesses operating in Brazil's digital payment ecosystem, where it handles sensitive transaction data and order metadata. The vulnerability resides within the plugin's clearOrderLogs() function, which is designed to manage and clear order log entries but lacks proper authentication and authorization checks. The flaw represents a significant security weakness that undermines the integrity and availability of critical business data.
The technical implementation of this vulnerability stems from the absence of capability validation within the clearOrderLogs() function, which operates without verifying whether the requesting user possesses appropriate permissions to perform data modification operations. This missing capability check creates an authentication bypass scenario where any unauthenticated attacker can exploit the function through direct API calls or web requests. The vulnerability is particularly concerning because it allows attackers to delete Rede Order Logs metadata from all WooCommerce orders, effectively removing critical transaction history and audit trails. This flaw operates at the application layer and can be exploited through standard web application attack vectors, making it accessible to threat actors with minimal technical expertise.
The operational impact of this vulnerability extends beyond simple data deletion, as it compromises the integrity of the entire WooCommerce payment processing system. Order log metadata contains crucial transactional information including payment status, processing timestamps, and merchant references that are essential for dispute resolution, compliance auditing, and business intelligence. When attackers can systematically delete this metadata, they create gaps in audit trails that can obscure fraudulent activities or legitimate business operations. The vulnerability affects all plugin versions up to and including 5.1.2, indicating that a substantial user base remains exposed to this risk. This represents a direct violation of the principle of least privilege and demonstrates poor input validation practices that are commonly addressed in secure coding guidelines.
Security implications of CVE-2026-0942 align with several common weakness enumerations including CWE-284, which addresses improper access control, and CWE-352, which covers cross-site request forgery. The vulnerability also maps to ATT&CK technique T1070.004, which involves the deletion of system logs to evade detection and maintain persistence. Organizations using this plugin face significant operational risks including potential compliance violations, financial losses, and reputational damage. The attack surface is particularly dangerous because the vulnerability does not require authentication, making it an attractive target for automated exploitation campaigns. Furthermore, the deletion of order logs can mask other security incidents, creating a false sense of security while actual malicious activities continue undetected.
Mitigation strategies should prioritize immediate plugin updates to versions that address the missing capability check in the clearOrderLogs() function. System administrators must also implement network-level monitoring to detect unusual API access patterns and unauthorized data modification attempts. Additional protective measures include restricting direct web access to plugin endpoints, implementing proper input validation, and establishing regular data backups that can restore deleted metadata. Organizations should conduct comprehensive security assessments of their WordPress environments to identify similar capability checks that may be missing in other plugins. The vulnerability highlights the importance of proper access control mechanisms and demonstrates how seemingly minor implementation flaws can create significant security risks in e-commerce payment processing systems. Regular security audits and vulnerability assessments should be integrated into the development lifecycle to prevent similar issues from emerging in future plugin versions.