CVE-2026-54647 in CubeCart
Summary
by MITRE • 09/18/2026
CubeCart is an ecommerce software solution. Prior to 6.7.5, admin/sources/settings.index.inc.php directly concatenates the administrator-controlled download_expire POST parameter into a raw UPDATE statement for CubeCart_downloads without numeric validation. An authenticated administrator can supply a comma-delimited value that changes the SET clause because HTML sanitization does not neutralize SQL syntax, allowing manipulation of database columns and potentially other data within the application's database privileges. This issue is fixed in version 6.7.5.
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Analysis
by VulDB Data Team • 09/18/2026
CubeCart represents a widely utilized ecommerce platform designed to facilitate online retail operations through robust inventory management, payment processing integration, and customer relationship tools. Within this ecosystem, administrative functions are critical for maintaining store configuration, including the handling of digital product downloads which often require specific expiration policies to control access duration or license validity periods. The vulnerability identified in versions prior to 6.7.5 resides within the administrative interface component responsible for managing these download settings, specifically located at admin/sources/settings.index.inc.php. This module processes POST requests from authenticated administrators to update system configurations, yet it fails to implement adequate input validation mechanisms before interacting with the underlying database layer.
The core technical flaw is a classic SQL injection vulnerability caused by improper neutralization of special elements used in SQL commands. Specifically, the download_expire parameter, which dictates how long downloaded files remain accessible after purchase or access initiation, is directly concatenated into an UPDATE SQL statement targeting the CubeCart_downloads table without any numeric validation or sanitization. Although HTML sanitization filters are applied to other inputs within this context, they do not neutralize SQL syntax characters such as commas and semicolons. This oversight allows an attacker who has obtained administrative credentials to inject arbitrary SQL code by supplying a comma-delimited value in the POST request. By manipulating the SET clause of the UPDATE statement, the attacker can alter values in database columns beyond just the intended download expiration field.
The operational impact of this vulnerability is severe due to the high privilege level required for exploitation and the breadth of access granted through administrative accounts. An authenticated administrator with network-level access or those who have compromised an admin session can exploit this flaw to modify arbitrary data within the CubeCart_downloads table structure. Beyond simple configuration changes, successful exploitation could lead to unauthorized modification of sensitive customer information, product pricing structures, or other critical business logic stored in adjacent tables if the injection payload is crafted to traverse scope limitations via UNION-based techniques or blind SQLi methods. This compromises the integrity and confidentiality aspects of the CIA triad for the ecommerce platform's data assets.
From a classification perspective, this vulnerability aligns with CWE-89: Improper Neutralization of Special Elements used in an SQL Command, commonly known as SQL Injection. The exploitation technique falls under MITRE ATT&CK framework techniques related to Data Manipulation and potentially Lateral Movement if the database credentials allow access to other systems. The lack of input validation on a privileged administrative endpoint highlights a failure in secure coding practices regarding parameterized queries or prepared statements, which are standard defenses against such injection attacks.
Mitigation strategies primarily involve upgrading to version 6.7.5 where this issue has been resolved by the vendor through proper implementation of input sanitization and database query preparation techniques that separate code from data. For organizations unable to immediately patch their systems, temporary mitigations include restricting administrative access via IP whitelisting, implementing Web Application Firewalls configured to detect SQL injection patterns in POST parameters related to download settings, and enforcing strict session management policies to prevent unauthorized use of admin credentials. Regular security audits focusing on input validation across all administrative endpoints are recommended to identify similar vulnerabilities before they can be exploited by malicious actors seeking to compromise ecommerce infrastructure integrity.