CVE-2000-0110 is a high-severity vulnerability affecting the WebSiteTool shopping cart application developed by Baron Consulting Group. This vulnerability arises because the application relies on hidden form fields to store sensitive purchase information, which can be manipulated by remote attackers without authentication. Since hidden form fields are stored client-side and can be easily modified by users or malicious actors, attackers can alter critical purchase parameters such as item prices, quantities, or payment details before submission. The vulnerability is remotely exploitable over the network without any authentication or user interaction, making it highly accessible to attackers. The CVSS v2 score of 7.5 reflects the significant impact on confidentiality, integrity, and availability, with an attack vector over the network, low attack complexity, and no authentication required. The lack of a patch or mitigation from the vendor further exacerbates the risk, leaving affected systems exposed. Although no known exploits have been reported in the wild, the simplicity of exploitation and the critical nature of the data involved make this vulnerability a serious threat to e-commerce operations using this software. Given the age of the vulnerability (published in 2000), it is likely that WebSiteTool is an outdated or legacy product, but any remaining deployments could be severely impacted.

For European organizations operating e-commerce platforms using the WebSiteTool shopping cart application, this vulnerability poses a significant risk. Attackers can manipulate purchase data to alter prices, quantities, or payment details, potentially leading to financial losses, fraudulent transactions, and reputational damage. The integrity of transaction data is compromised, undermining trust in the affected business. Confidential customer information may also be exposed or tampered with, violating data protection regulations such as GDPR. Additionally, the availability of the shopping cart service could be impacted if attackers exploit the vulnerability to disrupt normal operations. The absence of vendor patches means organizations must rely on compensating controls or migration to secure platforms. This vulnerability could also facilitate further attacks, such as fraud or money laundering, which are of particular concern to European financial and retail sectors. Organizations in Europe must carefully assess their exposure, especially those in countries with high e-commerce adoption and stringent regulatory environments.

Since no official patch is available, European organizations should implement the following specific mitigations: 1) Immediately audit all WebSiteTool shopping cart deployments to identify affected systems. 2) Replace or upgrade the shopping cart application to a modern, actively maintained e-commerce platform that properly validates and stores purchase data server-side rather than relying on client-side hidden fields. 3) Implement server-side validation and verification of all purchase-related data to prevent tampering, including cross-checking prices and quantities against trusted databases before processing transactions. 4) Employ web application firewalls (WAFs) with custom rules to detect and block suspicious modifications to form data or unusual transaction patterns. 5) Monitor transaction logs for anomalies indicative of manipulation attempts. 6) Educate development and security teams about the risks of client-side data storage and enforce secure coding practices. 7) Where immediate replacement is not feasible, consider disabling or restricting the affected shopping cart functionality until a secure alternative is in place. 8) Ensure compliance with GDPR by promptly reporting any data breaches resulting from exploitation of this vulnerability.