CVE-2026-114250: Sales-and-Inventory-System SQLI Vulnerability

CVE-2026-114250 Overview

CVE-2026-114250 is a SQL injection vulnerability in the itsourcecode Sales-and-Inventory-System, a PHP-based web application. The flaw resides in the /pages/cust_edit.php file, where the ID parameter is not properly sanitized before being used in a database query. An authenticated remote attacker can manipulate this parameter to inject arbitrary SQL statements. The project uses continuous delivery with rolling releases, so no specific affected or fixed version is identified. The affected commit reference is 0a3c45a78aaff3601b8cf9ce8ba82ff5c345caac. A public exploit has been disclosed, and the maintainers were notified through an issue report but have not responded.

Critical Impact
Remote authenticated attackers can inject SQL commands via the ID parameter in cust_edit.php, potentially leading to unauthorized read, modification, or disclosure of database contents.

Affected Products

itsourcecode Sales-and-Inventory-System (rolling release)
Commit reference 0a3c45a78aaff3601b8cf9ce8ba82ff5c345caac and earlier
Component: /pages/cust_edit.php

Discovery Timeline

2026-10-21 - CVE-2026-114250 published to NVD
2026-10-21 - Last updated in NVD database

Technical Details for CVE-2026-114250

Vulnerability Analysis

The vulnerability is a SQL injection flaw classified under [CWE-74] (Improper Neutralization of Special Elements in Output Used by a Downstream Component). The affected script /pages/cust_edit.php accepts an ID parameter supplied in an HTTP request. The parameter is passed into a SQL query without proper sanitization or parameterization. This allows an attacker to append or alter SQL syntax, change query logic, and interact with the backend database beyond the intended scope.

Because the Sales-and-Inventory-System handles customer records, exploitation can expose personally identifiable information, modify transactional data, or corrupt inventory records. The attack requires low privileges but can be launched remotely over the network.

Root Cause

The cust_edit.php script concatenates user-controlled input from the ID parameter directly into a SQL statement. The absence of prepared statements, parameterized queries, or input validation allows the SQL parser to interpret attacker-supplied syntax as part of the query structure.

Attack Vector

An attacker sends a crafted HTTP request to the cust_edit.php endpoint with a malicious value in the ID parameter. The injected SQL payload executes within the application's database context. Public exploitation details are available in the GitHub Issue Tracker and the VulDB CVE-2026-114250 entry.

// No verified exploit code is reproduced here.
// Exploitation involves submitting SQL metacharacters in the ID parameter
// of a request to /pages/cust_edit.php to alter the underlying query logic.

Detection Methods for CVE-2026-114250

Indicators of Compromise

HTTP requests to /pages/cust_edit.php containing SQL metacharacters such as single quotes, UNION, SELECT, --, or OR 1=1 in the ID parameter.
Unexpected database errors or stack traces returned by the application following requests to the customer edit endpoint.
Anomalous outbound traffic from the web server hosting the Sales-and-Inventory-System following suspicious requests.

Detection Strategies

Deploy a web application firewall (WAF) with SQL injection signatures tuned for the cust_edit.php endpoint and ID parameter.
Enable verbose database query logging and alert on queries containing suspicious tautologies or union-based constructs originating from this endpoint.
Review web server access logs for non-numeric or oversized ID parameter values submitted to cust_edit.php.

Monitoring Recommendations

Monitor authentication logs for compromised low-privilege accounts, since exploitation requires valid credentials.
Track database user activity for abnormal SELECT, UPDATE, or INFORMATION_SCHEMA queries from the web application service account.
Alert on repeated 500-series HTTP responses from cust_edit.php, which often indicate injection probing.

How to Mitigate CVE-2026-114250

Immediate Actions Required

Restrict access to the Sales-and-Inventory-System to trusted networks until a fix is available, as the upstream project has not responded to the disclosure.
Deploy WAF rules that block SQL injection patterns on the ID parameter of /pages/cust_edit.php.
Audit customer and transaction tables for unauthorized changes or exfiltration attempts.

Patch Information

No official patch is available. The project uses continuous delivery with rolling releases, and no fixed commit has been published. Administrators should apply manual code fixes by replacing concatenated SQL in cust_edit.php with parameterized queries using PDO or MySQLi prepared statements. Monitor the GitHub Issue Tracker and VulDB Vulnerability #424682 for upstream updates.

Workarounds

Enforce strict server-side input validation on the ID parameter to accept only expected integer values.
Run the database service account with least-privilege permissions to limit the impact of successful injection.
Disable or remove the cust_edit.php endpoint if customer edit functionality is not required in production.

bash

# Example WAF rule concept (ModSecurity) to block SQLi patterns on cust_edit.php
# Review and tune before deploying to production
SecRule REQUEST_URI "@contains /pages/cust_edit.php" \
  "id:1026114250,phase:2,deny,status:403,\
  chain,msg:'Potential SQLi in cust_edit.php ID parameter'"
  SecRule ARGS:ID "@rx (?i)(union(.*?)select|or\s+1=1|--|;|/\*)" "t:none,t:urlDecode"