Executive brief
The Sales and Inventory System is a PHP-based management application used to track product sales and stock levels. A SQL injection vulnerability in the username parameter allows authenticated attackers to inject malicious database queries, potentially exposing sensitive data, modifying records, or compromising the entire database and system availability.
Technical details
A SQL injection vulnerability exists in the /pages/us_transac.php file of Sales and Inventory System 1.0, where the 'username' parameter is not properly sanitized before being used in SQL queries. The vulnerability requires valid authentication (login credentials) but no additional user interaction. An authenticated attacker can inject malicious SQL code through the username field to manipulate database queries, extracting sensitive data, modifying records, or executing arbitrary commands with database privileges. The application should implement prepared statements with parameter binding, input validation, and principle of least privilege for database user accounts. Patches or updates to remediate this issue are not currently documented in available references.
Affected products
- itsourcecode Sales and Inventory System 1.0
Timeline
- 2026-07-23: disclosed: SQL injection vulnerability reported on GitHub
- 2026-09-07: advisory: CVE-2026-86265 published