CVE-2025-15084 identifies an improper access control vulnerability in the youlaitech youlai-mall e-commerce platform, versions 1.0.0 and 2.0.0. The flaw resides in the orderService.payOrder function within the Order Payment Handler component, specifically in the Java source file mall-oms/oms-boot/src/main/java/com/youlai/mall/oms/controller/app/OrderController.java. This vulnerability allows a remote attacker to manipulate the payment process due to insufficient access control checks. Exploiting this flaw does not require user interaction but does require low privileges and is considered of high complexity, making exploitation difficult. The CVSS 4.0 vector (AV:N/AC:H/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P) indicates network attack vector, high attack complexity, low privileges, no user interaction, no confidentiality or availability impact, and low integrity impact. The vendor was contacted but did not respond, and no patches or mitigations have been published. No known exploits are currently active in the wild. The vulnerability could potentially allow unauthorized payment manipulations, but the limited impact and complexity reduce the immediate risk.

For European organizations using youlai-mall versions 1.0.0 or 2.0.0, this vulnerability could allow unauthorized manipulation of payment orders, potentially leading to financial discrepancies or fraud. However, the low CVSS score and high attack complexity suggest a limited likelihood of successful exploitation. The impact on confidentiality and availability is negligible, and integrity impact is low, meaning critical data leakage or service disruption is unlikely. Still, organizations handling sensitive payment data should be cautious, as any unauthorized payment manipulation could undermine customer trust and regulatory compliance, especially under GDPR and PCI DSS frameworks. The lack of vendor response and patches increases the risk of prolonged exposure. European e-commerce platforms with similar architectures might also be indirectly affected if they integrate or rely on youlai-mall components.

Organizations should conduct a thorough code review of the orderService.payOrder function and related access control mechanisms to ensure proper authorization checks are enforced. Implement strict role-based access controls (RBAC) around payment processing functions and monitor payment transaction logs for anomalies. Employ network segmentation and firewall rules to limit access to the order payment handler endpoints. Since no official patches are available, consider deploying web application firewalls (WAFs) with custom rules to detect and block suspicious payment manipulation attempts. Engage in proactive threat hunting focused on payment-related activities. Maintain up-to-date backups and incident response plans tailored to payment fraud scenarios. Finally, monitor vendor communications for any future patches or advisories and plan for timely updates once available.