CVE-2025-12919 is a vulnerability identified in the EverShop e-commerce platform, specifically affecting versions 2.0.0 and 2.0.1. The issue lies in the Order Handler component within the GraphQL resolver file Order.resolvers.js, where improper control over resource identifiers occurs due to insufficient validation or sanitization of the 'uuid' argument. This flaw allows an attacker to manipulate the uuid parameter remotely, potentially gaining unauthorized access or control over order-related resources. The vulnerability does not require authentication or user interaction, but the attack complexity is high, indicating that exploitation demands advanced skills or specific conditions. The CVSS 4.0 base score is 6.3 (medium severity), reflecting network attack vector, high complexity, no privileges or user interaction needed, and low impact on confidentiality with no impact on integrity or availability. Although the exploit code has been publicly disclosed, no active exploitation has been reported in the wild. The vendor has not responded to early disclosure attempts, and no official patches or mitigations have been released. This vulnerability could lead to unauthorized data exposure or manipulation within the order management system, undermining data integrity and confidentiality. The GraphQL interface's exposure increases the attack surface, especially if accessible from the internet. Organizations relying on EverShop for order processing should be aware of this risk and implement compensating controls until a patch is available.

For European organizations using EverShop, this vulnerability poses a risk to the confidentiality and integrity of order data. Attackers exploiting the flaw could access or manipulate order information, potentially leading to fraudulent transactions, data leakage of customer details, or disruption of order processing workflows. This could damage customer trust, lead to financial losses, and result in regulatory non-compliance under GDPR due to unauthorized access to personal data. The medium severity and high attack complexity suggest that only skilled attackers would likely succeed, but the public availability of exploit details increases the risk over time. Organizations with exposed GraphQL endpoints or insufficient network segmentation are particularly vulnerable. The impact is more pronounced for large e-commerce operators or those handling sensitive customer data. Additionally, the lack of vendor response and patches prolongs exposure, increasing the window of opportunity for attackers.

1. Implement strict input validation and sanitization on the 'uuid' parameter within the GraphQL Order Handler to prevent manipulation of resource identifiers. 2. Restrict access to GraphQL endpoints by enforcing network segmentation, IP whitelisting, or VPN access to limit exposure to trusted users only. 3. Monitor GraphQL query logs for unusual or malformed uuid values indicative of exploitation attempts. 4. Employ Web Application Firewalls (WAF) with custom rules targeting suspicious GraphQL queries related to order resources. 5. Conduct regular security assessments and code reviews focusing on resource identifier handling in the Order Handler component. 6. Engage with EverShop vendor or community to track patch releases and apply updates promptly once available. 7. Consider implementing additional authentication or authorization checks on order-related queries to reduce risk. 8. Educate development and operations teams about this vulnerability and encourage proactive threat hunting for related indicators.