CVE-2025-13116 is an improper authorization vulnerability found in the macrozheng mall-swarm e-commerce platform, specifically in the cancelUserOrder function located in the /order/cancelUserOrder endpoint. The vulnerability arises from insufficient authorization checks when processing the orderId parameter, allowing an attacker to remotely manipulate this argument to cancel orders they do not own or are not authorized to cancel. The vulnerability affects versions 1.0.0 through 1.0.3 of mall-swarm. Exploitation does not require user interaction or elevated privileges, making it accessible to remote unauthenticated attackers. The CVSS 4.0 score is 5.3 (medium), reflecting the moderate impact on confidentiality, integrity, and availability, with ease of exploitation and no authentication required. The vendor has been contacted but has not issued any patch or response, and exploit code has been publicly released, increasing the risk of exploitation. The vulnerability could lead to unauthorized order cancellations, disrupting business operations, causing financial loss, and damaging customer trust. Since mall-swarm is an e-commerce platform, this vulnerability directly threatens the integrity and availability of order management systems.

For European organizations, especially those operating e-commerce platforms using mall-swarm, this vulnerability poses a significant risk. Unauthorized order cancellations can lead to financial losses, inventory management issues, and customer dissatisfaction. The integrity of order data is compromised, potentially enabling fraud or abuse by malicious actors. Disruption of order processing can affect supply chains and customer service operations. Given the public availability of exploit code and lack of vendor response, attackers may quickly weaponize this vulnerability, increasing the likelihood of targeted attacks against European retailers. This could also impact regulatory compliance related to data integrity and consumer protection laws within the EU. Organizations relying on mall-swarm without adequate compensating controls are particularly vulnerable to operational disruption and reputational damage.

Since no official patch is available, European organizations should implement immediate compensating controls. First, enforce strict server-side authorization checks on the cancelUserOrder endpoint to verify that the requesting user is authorized to cancel the specified orderId. Implement input validation and parameter sanitization to prevent manipulation of orderId values. Monitor logs for unusual or repeated cancellation requests, especially those originating from suspicious IP addresses or patterns indicative of automated attacks. Employ rate limiting and anomaly detection on order cancellation APIs to reduce abuse risk. Consider temporarily disabling the cancelUserOrder functionality if feasible until a patch is released. Engage with the vendor or community to encourage a timely patch release. Additionally, educate customer service teams to verify suspicious cancellations and maintain audit trails for order modifications. Finally, review and strengthen overall access control policies within the e-commerce platform.