CVE-2026-86517 in Sales and Inventory System
Summary
by MITRE • 09/08/2026
A flaw has been found in itsourcecode Sales and Inventory System 1.0. The impacted element is the function mysqli_query of the file /pages/us_searchfrm.php. Executing a manipulation of the argument ID can lead to sql injection. It is possible to launch the attack remotely. The exploit has been published and may be used.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 09/08/2026
The itsourcecode Sales and Inventory System version 1.0 contains a critical security vulnerability classified as SQL Injection, specifically identified under CWE-89 within industry standard classification frameworks. This flaw resides in the mysqli_query function located within the /pages/us_searchfrm.php file of the application's codebase. The root cause of this issue is the improper neutralization of special elements used in an SQL command, commonly known as unvalidated input or lack of parameterized queries. When a user provides input for the ID argument during a search operation, the system directly concatenates this value into an SQL query string without adequate sanitization or validation checks. This architectural weakness allows malicious actors to inject arbitrary SQL commands that are executed by the underlying database management system with the same privileges as the web application itself.
The operational impact of this vulnerability is severe and multifaceted. Because the flaw can be exploited remotely, attackers do not require prior authentication or physical access to the network infrastructure to launch an attack. By manipulating the ID parameter in HTTP requests sent to the us_searchfrm.php endpoint, a threat actor can bypass intended logic controls. This capability enables unauthorized data exfiltration, where sensitive information such as customer records, inventory details, and potentially administrative credentials stored within the database are extracted. Furthermore, skilled attackers may leverage this injection point for more advanced attacks, including modifying or deleting critical business data, which compromises the integrity of the system's operations. In worst-case scenarios, depending on the configuration of the underlying MySQL server, SQL Injection can be chained with other vulnerabilities to achieve remote code execution, effectively granting full control over the hosting environment and potentially leading to a complete compromise of the organization's IT assets.
This vulnerability aligns closely with MITRE ATT&CK techniques related to Database Query Manipulation (T1059) and Data Exfiltration via Unsecured API or Endpoint (T1048). The availability of published exploits significantly increases the risk profile, as automated scanning tools and opportunistic attackers can easily identify and leverage this weakness in vulnerable instances. To mitigate this issue, immediate remediation is required by developers to refactor the affected code. The primary solution involves replacing direct string concatenation with prepared statements using parameterized queries provided by the mysqli extension or PDO. This ensures that user input is treated strictly as data rather than executable code. Additionally, implementing strict input validation on all client-supplied parameters, applying least privilege principles for database accounts used by the web application, and deploying a Web Application Firewall to detect and block common SQL injection patterns can provide defense-in-depth layers while patches are being developed or applied.