CVE-2026-108493 in Pay for Payment Plugin
Summary
by MITRE • 10/13/2026
Missing Authorization vulnerability in Karolína Vyskočilová Pay for Payment for WooCommerce woocommerce-pay-for-payment allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Pay for Payment for WooCommerce: from n/a through 3.0.1.
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Analysis
by VulDB Data Team • 10/13/2026
The identified security flaw resides within the Pay for Payment plugin for WooCommerce, a widely utilized extension that modifies standard e-commerce checkout flows to allow customers to pay directly via specific gateways without completing a full order process initially. This vulnerability is classified as an improper access control issue, specifically falling under CWE-284: Improper Access Control. The core technical deficiency involves the application's failure to enforce adequate authorization checks on critical endpoints or actions related to payment processing and status updates. In a properly secured environment, any request that modifies state or retrieves sensitive transactional data must verify that the requesting user possesses the necessary permissions for that specific action relative to their role and session context. However, in versions of this plugin ranging from its initial release through version 3.0.1, these checks are either missing or incorrectly implemented, allowing an attacker to bypass intended security boundaries.
From a technical perspective, this misconfiguration enables unauthorized actors to interact with payment-related functions without valid authentication tokens or proper session validation. An adversary could potentially manipulate HTTP requests to trigger payment confirmations, alter order statuses, or access sensitive customer data associated with pending transactions. This type of vulnerability is often exploited through automated tools that send crafted requests to the application's API endpoints, bypassing the frontend interface entirely. The lack of server-side authorization verification means that even if a user is not logged in or lacks administrative privileges, they can still execute actions intended only for authenticated users or system administrators. This aligns with MITRE ATT&CK technique T1078: Valid Accounts, where attackers leverage legitimate credentials or bypass authentication mechanisms to gain unauthorized access, although in this specific case, the flaw allows exploitation even without valid accounts due to the absence of checks rather than credential theft.
The operational impact of this vulnerability is significant for businesses relying on WooCommerce and its payment extensions. Successful exploitation could lead to financial fraud, where attackers manipulate payment statuses to mark unpaid orders as paid or redirect payments to unauthorized merchant accounts. It also poses a severe risk to data privacy, potentially exposing customer personally identifiable information (PII) such as names, addresses, and contact details during the checkout process. Furthermore, the integrity of order management is compromised, leading to inventory discrepancies and fulfillment errors that disrupt business operations. The trust relationship between the e-commerce platform and its customers is eroded when users realize their financial data or transaction history can be tampered with by external actors exploiting these access control failures.
To mitigate this risk, immediate action is required for all systems running affected versions of the Pay for Payment plugin. Administrators should upgrade to version 3.0.2 or later, where the developer has addressed the authorization logic and implemented robust checks on relevant endpoints. Until an update can be applied, temporary mitigations include restricting access to WooCommerce admin pages via IP whitelisting if possible, ensuring that all server-side scripts validate user roles before processing payment-related requests, and monitoring logs for unusual patterns of activity such as repeated failed authentication attempts or unexpected changes in order status. Additionally, implementing a Web Application Firewall (WAF) with rules tuned to detect common exploitation techniques associated with broken access control can provide an additional layer of defense by blocking malicious payloads targeting these vulnerable endpoints. Regular security audits and penetration testing focused on authorization flows are recommended to ensure that similar gaps do not exist elsewhere in the application architecture.