CVE-2026-48016 in Shopware
Summary
by MITRE • 07/17/2026
Shopware is an open commerce platform. Prior to 6.6.10.18 and 6.7.10.1, the Store API endpoint /store-api/handle-payment in src/Core/Checkout/Payment/SalesChannel/HandlePaymentMethodRoute.php accepts a user-controlled orderId and forwards it to src/Core/Checkout/Payment/PaymentProcessor.php without verifying order ownership or guest-order authentication, allowing a normal customer or guest context to trigger the payment flow for another user's order while /store-api/order enforces the expected ownership model. This issue is fixed in versions 6.6.10.18 and 6.7.10.1.
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Analysis
by VulDB Data Team • 07/17/2026
The vulnerability exists within Shopware's payment processing mechanism where the Store API endpoint /store-api/handle-payment fails to properly validate order ownership before initiating payment flows. This flaw creates a critical access control issue that allows unauthorized parties to manipulate payment processes for orders they do not own, specifically affecting versions prior to 6.6.10.18 and 6.7.10.1. The technical implementation in src/Core/Checkout/Payment/SalesChannel/HandlePaymentMethodRoute.php accepts a user-controlled orderId parameter without proper authentication checks that should verify the requesting user's ownership of the target order.
The core flaw stems from inconsistent security enforcement between different API endpoints within the platform. While the /store-api/order endpoint properly enforces ownership validation through expected authentication mechanisms, the /store-api/handle-payment endpoint bypasses these same security controls by directly forwarding the orderId parameter to PaymentProcessor.php without verifying that the requesting context matches the order's owner. This discrepancy creates a privilege escalation vector where normal customers or guest users can manipulate payment flows for orders belonging to other users.
This vulnerability directly maps to CWE-285 (Improper Authorization) and aligns with ATT&CK technique T1078 (Valid Accounts) as it exploits legitimate user contexts to perform unauthorized actions. The operational impact is significant since attackers could potentially initiate payments for orders they do not own, leading to financial loss for legitimate customers, payment fraud, and potential system integrity compromise. The issue particularly affects e-commerce environments where order ownership verification is critical for maintaining transactional security.
The fix implemented in versions 6.6.10.18 and 6.7.10.1 addresses this by enforcing proper order ownership validation before processing payment requests through the handle-payment endpoint. This remediation ensures that all payment operations require authenticated verification of order ownership, aligning the behavior of the handle-payment endpoint with other API endpoints in the platform. Security best practices dictate that payment processing should never accept user-controlled identifiers without explicit authorization checks, particularly when dealing with financial transactions that could impact multiple users' accounts. Organizations using affected versions should immediately implement the patch to prevent potential exploitation and maintain compliance with e-commerce security standards.
The vulnerability demonstrates a classic case of inconsistent access control implementation within web applications where authentication mechanisms work properly for some endpoints but are bypassed or inadequately enforced in others. This type of flaw often arises during development when security considerations are not consistently applied across all application components, particularly in complex platforms like Shopware that handle multiple user contexts including registered customers and guest users. The remediation approach should include comprehensive testing of all payment-related API endpoints to ensure consistent enforcement of ownership validation mechanisms.