CVE-2000-0135 in @Retail
Summary
by MITRE
The @Retail shopping cart application allows remote users to modify sensitive purchase information via hidden form fields.
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Analysis
by VulDB Data Team • 04/20/2026
The vulnerability described in CVE-2000-0135 represents a critical access control flaw within the @Retail shopping cart application that exposes sensitive purchase data to unauthorized modification by remote attackers. This issue stems from inadequate input validation and insufficient server-side processing of user-supplied data, creating a pathway for malicious actors to manipulate transaction details through hidden form fields that are typically not visible to end users. The vulnerability specifically affects the application's handling of purchase information where sensitive data such as product prices, quantities, and customer details can be altered without proper authorization.
The technical implementation of this vulnerability resides in the application's failure to properly validate and sanitize form field inputs, particularly those that are hidden or obscured from normal user interaction. When users submit purchase forms, the application relies on client-side data that can be easily modified by attackers who intercept the form submission process or directly manipulate the hidden fields. This weakness falls under the category of insufficient input validation and improper access control mechanisms, which are commonly classified under CWE-20 for input validation errors and CWE-285 for improper access control. The vulnerability demonstrates a fundamental flaw in the application's security architecture where server-side validation is either absent or inadequate, allowing attackers to bypass normal transaction processing controls.
From an operational impact perspective, this vulnerability creates significant risks for both businesses and consumers within the e-commerce ecosystem. Attackers can exploit this flaw to manipulate purchase orders, potentially increasing product costs, changing quantities, or altering customer information without detection. The implications extend beyond simple financial fraud to include potential data integrity compromise, customer trust erosion, and regulatory compliance violations. According to ATT&CK framework category T1213, this vulnerability aligns with the technique of data manipulation, where adversaries compromise the integrity of data within applications to achieve unauthorized outcomes. The vulnerability also represents a form of injection attack where attackers manipulate form data to achieve privileged actions without proper authentication or authorization.
The exploitation of this vulnerability requires minimal technical expertise, making it particularly dangerous as it can be leveraged by attackers with basic web application knowledge. The hidden form fields that enable this attack are typically generated dynamically by the application and may include elements such as product identifiers, pricing information, or transaction IDs that are normally protected from user modification. Security professionals should recognize that this vulnerability type often indicates broader architectural weaknesses in web application security, particularly in the areas of input sanitization, output encoding, and proper session management. The impact of such vulnerabilities can extend beyond immediate financial loss to include long-term reputation damage and increased liability exposure for organizations handling sensitive transactional data. Organizations should implement comprehensive security measures including server-side validation of all form inputs, proper access controls, and regular security testing to prevent exploitation of similar vulnerabilities.