CVE-2026-26708: Pharmacy Point Of Sale System SQLi Flaw

CVE-2026-26708 Overview

CVE-2026-26708 is a critical SQL Injection vulnerability affecting the Sourcecodester Pharmacy Point of Sale System version 1.0. The vulnerability exists in the /pharmacy/manage_user.php endpoint, allowing unauthenticated attackers to execute arbitrary SQL commands against the backend database. This type of vulnerability can lead to complete database compromise, unauthorized data access, and potential system takeover.

Critical Impact
Unauthenticated attackers can exploit this SQL Injection flaw to extract sensitive pharmacy and customer data, modify database records, or potentially achieve remote code execution through database functionality.

Affected Products

Oretnom23 Pharmacy Point Of Sale System version 1.0
Systems running /pharmacy/manage_user.php endpoint

Discovery Timeline

2026-03-02 - CVE-2026-26708 published to NVD
2026-03-03 - Last updated in NVD database

Technical Details for CVE-2026-26708

Vulnerability Analysis

This SQL Injection vulnerability (CWE-89) occurs in the user management functionality of the Pharmacy Point of Sale System. The /pharmacy/manage_user.php endpoint fails to properly sanitize user-supplied input before incorporating it into SQL queries. As a network-accessible vulnerability requiring no authentication or user interaction, attackers can remotely target any exposed instance of this application.

The vulnerable component handles user management operations, making it particularly dangerous as it likely has elevated database privileges. Successful exploitation could allow attackers to bypass authentication, access all pharmacy records including customer information and prescription data, modify or delete critical inventory and transaction records, or potentially leverage database features for further system compromise.

Root Cause

The root cause of this vulnerability is improper input validation and the lack of parameterized queries or prepared statements in the /pharmacy/manage_user.php file. User-controlled input is directly concatenated into SQL query strings without proper sanitization or escaping, allowing attackers to inject malicious SQL syntax that alters the intended query logic.

Attack Vector

The attack vector is network-based, allowing remote exploitation without requiring authentication or user interaction. An attacker can craft malicious HTTP requests to the /pharmacy/manage_user.php endpoint containing SQL injection payloads in vulnerable parameters.

The vulnerability allows for various SQL injection techniques including UNION-based injection to extract data from other tables, boolean-based blind injection to infer database contents, time-based blind injection using database sleep functions, and potentially stacked queries depending on the database configuration.

Technical details and proof-of-concept information are available in the GitHub PoC SQL Injection report.

Detection Methods for CVE-2026-26708

Indicators of Compromise

Unusual SQL error messages in web server logs referencing /pharmacy/manage_user.php
HTTP requests to manage_user.php containing SQL keywords such as UNION, SELECT, OR 1=1, or encoded variants
Database query logs showing anomalous queries with syntax errors or unauthorized table access
Unexpected database user enumeration or bulk data extraction patterns

Detection Strategies

Deploy Web Application Firewall (WAF) rules to detect and block common SQL injection patterns targeting the manage_user.php endpoint
Implement database activity monitoring to alert on unusual query patterns, excessive data retrieval, or queries from the web application accessing sensitive tables
Configure intrusion detection systems (IDS) with signatures for SQL injection attack patterns
Enable detailed logging for the /pharmacy/ directory and monitor for suspicious parameter values

Monitoring Recommendations

Monitor web server access logs for requests to /pharmacy/manage_user.php with encoded characters or SQL syntax
Set up alerts for database errors generated by the pharmacy application
Track failed authentication attempts and unusual user management operations
Implement real-time monitoring of database connections and query execution times

How to Mitigate CVE-2026-26708

Immediate Actions Required

Take the Pharmacy Point of Sale System offline if internet-exposed until the vulnerability is remediated
Implement network-level access controls to restrict access to the /pharmacy/ directory to trusted IP addresses only
Deploy WAF rules to block SQL injection attempts against the vulnerable endpoint
Review database access logs for signs of prior exploitation and potential data compromise

Patch Information

No official vendor patch has been identified for this vulnerability at the time of publication. Users of the Sourcecodester Pharmacy Point of Sale System should contact the developer (oretnom23) for remediation guidance or consider implementing the workarounds below. Monitor the GitHub PoC SQL Injection report for updates.

Workarounds

Restrict network access to the application using firewall rules or VPN requirements
Implement input validation and parameterized queries in the manage_user.php file if source code modification is possible
Deploy a reverse proxy with SQL injection filtering capabilities in front of the application
Consider migrating to an actively maintained pharmacy management system with proper security practices

bash

# Apache configuration to restrict access to the vulnerable endpoint
<Location /pharmacy/manage_user.php>
    Order deny,allow
    Deny from all
    Allow from 192.168.1.0/24
    # Only allow access from trusted internal network
</Location>