CVE-2026-7087: Pharmacy Sales Inventory SQLi Vulnerability

CVE-2026-7087 Overview

A SQL Injection vulnerability has been discovered in SourceCodester Pharmacy Sales and Inventory System 1.0. The vulnerability exists in the /ajax.php?action=save_sales endpoint, where manipulation of the ID argument enables SQL injection attacks. This flaw can be exploited remotely by unauthenticated attackers, potentially allowing unauthorized access to sensitive database information, data manipulation, and system compromise. The exploit has been publicly released, increasing the risk of active exploitation.

Critical Impact
Remote attackers can exploit this SQL Injection vulnerability to extract sensitive pharmacy data, modify sales records, and potentially gain unauthorized access to the underlying database system.

Affected Products

SourceCodester Pharmacy Sales and Inventory System 1.0
Installations using the vulnerable /ajax.php endpoint

Discovery Timeline

2026-04-27 - CVE-2026-7087 published to NVD
2026-04-29 - Last updated in NVD database

Technical Details for CVE-2026-7087

Vulnerability Analysis

This vulnerability is classified as CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), commonly known as Injection. The vulnerable endpoint /ajax.php?action=save_sales fails to properly sanitize user-supplied input in the ID parameter before incorporating it into SQL queries. This lack of input validation allows attackers to inject malicious SQL statements that are executed by the database engine.

The vulnerability is particularly dangerous because it can be exploited remotely without authentication. In the context of a pharmacy management system, successful exploitation could lead to the exposure of sensitive patient information, medication records, financial data, and inventory details. Attackers could also modify or delete critical sales and inventory records, potentially disrupting pharmacy operations.

Root Cause

The root cause of this vulnerability is improper input validation and failure to implement parameterized queries or prepared statements when processing the ID argument in the save_sales action. The application directly concatenates user-supplied input into SQL queries without sanitization, escaping, or the use of database abstraction layers that prevent injection attacks.

Attack Vector

The attack vector is network-based, meaning attackers can exploit this vulnerability remotely over HTTP/HTTPS. The attack requires no authentication or special privileges, and no user interaction is needed for successful exploitation. An attacker can craft malicious HTTP requests to the /ajax.php?action=save_sales endpoint with specially crafted ID parameter values containing SQL injection payloads.

The vulnerability allows attackers to:

Extract sensitive database contents through UNION-based or blind SQL injection techniques
Modify or delete existing database records
Potentially escalate privileges if the database user has elevated permissions
Execute administrative operations on the database server in certain configurations

Technical details and proof-of-concept information can be found in the GitHub Issue Report and VulDB Vulnerability #359662.

Detection Methods for CVE-2026-7087

Indicators of Compromise

Unusual HTTP requests to /ajax.php?action=save_sales containing SQL syntax characters such as single quotes ('), double dashes (--), or SQL keywords
Database error messages appearing in web application logs indicating malformed queries
Unexpected database queries or access patterns in database audit logs
Signs of data exfiltration or unauthorized data modifications in the pharmacy system

Detection Strategies

Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns targeting the /ajax.php endpoint
Implement database activity monitoring to detect anomalous query patterns or unauthorized data access
Configure intrusion detection systems (IDS) to alert on SQL injection signatures in HTTP traffic
Enable detailed logging on the web server and database to capture suspicious requests

Monitoring Recommendations

Monitor HTTP access logs for requests to /ajax.php?action=save_sales with suspicious parameter values
Set up alerts for database errors or exceptions that may indicate failed injection attempts
Review database audit logs regularly for unauthorized SELECT, UPDATE, INSERT, or DELETE operations
Implement real-time monitoring of database query response times as a potential indicator of blind SQL injection attacks

How to Mitigate CVE-2026-7087

Immediate Actions Required

Restrict access to the /ajax.php endpoint using network-level controls or web server configuration
Implement input validation on the ID parameter to accept only expected data types (e.g., integers)
Deploy a Web Application Firewall with SQL injection protection rules as a temporary mitigation
Consider taking the vulnerable functionality offline until a proper fix can be implemented

Patch Information

As of the last NVD update on 2026-04-29, no official vendor patch has been released for this vulnerability. Organizations using SourceCodester Pharmacy Sales and Inventory System should monitor the SourceCodester website for security updates. Given the publicly available exploit, organizations are strongly advised to implement workarounds immediately while awaiting an official patch.

For additional vulnerability intelligence, refer to VulDB CTI for #359662 and VulDB Submission #800060.

Workarounds

Implement parameterized queries or prepared statements in the vulnerable PHP code to prevent SQL injection
Add input validation to ensure the ID parameter contains only numeric values before processing
Restrict network access to the application to trusted IP addresses only
Place the application behind a reverse proxy with SQL injection filtering capabilities

bash

# Example: Restrict access to ajax.php using Apache .htaccess
<Files "ajax.php">
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
</Files>