CVE-2025-9835 is an authorization bypass vulnerability identified in the macrozheng mall e-commerce platform versions up to 1.0.3. The vulnerability specifically affects the cancelOrder function located in the /order/cancelUserOrder endpoint. By manipulating the orderId parameter, an attacker can bypass authorization checks, allowing them to cancel orders that they do not own or have permission to manage. This flaw arises because the application does not properly verify that the user initiating the cancel request is authorized to perform this action on the specified orderId. The vulnerability can be exploited remotely without requiring user interaction or prior authentication, as indicated by the CVSS vector (AV:N/AC:L/AT:N/PR:L/UI:N). The CVSS score of 5.3 (medium severity) reflects that while the attack is relatively easy to perform and does not require user interaction, it does require some level of privileges (low privileges) to initiate the exploit. The impact primarily affects the integrity of order management, potentially allowing attackers to disrupt business operations by canceling legitimate orders, causing financial loss, customer dissatisfaction, and reputational damage. Although no public exploits have been observed in the wild yet, the public disclosure of the vulnerability increases the risk of exploitation. No patches or mitigations have been linked yet, so organizations using macrozheng mall versions 1.0.0 through 1.0.3 should consider this vulnerability critical to address promptly.

For European organizations using the macrozheng mall platform, this vulnerability poses a significant risk to the integrity and reliability of their e-commerce operations. Attackers exploiting this flaw could cancel legitimate customer orders, leading to direct financial losses and undermining customer trust. This could also disrupt supply chain and inventory management processes, causing operational inefficiencies. Given the remote exploitability and lack of user interaction required, attackers could automate attacks at scale, potentially targeting multiple organizations simultaneously. Additionally, unauthorized order cancellations could be used as a vector for fraud or to mask other malicious activities. The medium CVSS score suggests moderate impact, but the real-world consequences could be severe depending on the volume and value of orders processed through the affected platform. European businesses in retail, wholesale, and distribution sectors relying on macrozheng mall are particularly vulnerable, especially those with high transaction volumes or critical supply chains.

1. Immediate mitigation should involve restricting access to the /order/cancelUserOrder endpoint to authenticated and authorized users only, ensuring strict validation that the user owns or has permission to cancel the specified orderId. 2. Implement server-side authorization checks that verify the relationship between the user and the order before processing cancellation requests. 3. Monitor logs for unusual cancellation patterns or spikes in order cancellations that could indicate exploitation attempts. 4. If possible, apply any vendor-provided patches or updates as soon as they become available. 5. As a temporary workaround, consider disabling the cancel order functionality or limiting it to manual processing until a patch is released. 6. Conduct a thorough security review of all order management APIs to identify and remediate similar authorization weaknesses. 7. Educate staff and customers about potential fraudulent order cancellations and establish procedures to verify suspicious cancellations. 8. Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious requests targeting the order cancellation endpoint.