CVE-2026-26705: Pharmacy Point Of Sale System SQLi Flaw

CVE-2026-26705 Overview

CVE-2026-26705 is a SQL Injection vulnerability affecting Sourcecodester Pharmacy Point of Sale System v1.0. The vulnerability exists in the /pharmacy/view_product.php endpoint, allowing unauthenticated attackers to execute arbitrary SQL commands against the backend database. This type of vulnerability can lead to complete database compromise, data exfiltration, and potentially full system takeover.

Critical Impact

Unauthenticated SQL Injection allows attackers to read, modify, or delete sensitive pharmacy data including customer information, prescription records, and financial transactions. Complete database compromise is possible.

Affected Products

• Oretnom23 Pharmacy Point of Sale System v1.0
• oretnom23:pharmacy_point_of_sale_system (CPE: cpe:2.3:a:oretnom23:pharmacy_point_of_sale_system:1.0:*:*:*:*:*:*:*)

Discovery Timeline

• 2026-03-02 - CVE CVE-2026-26705 published to NVD
• 2026-03-03 - Last updated in NVD database

Technical Details for CVE-2026-26705

Vulnerability Analysis

This SQL Injection vulnerability (CWE-89) exists in the view_product.php file within the pharmacy module. The application fails to properly sanitize user-supplied input before incorporating it into SQL queries, creating a classic injection point. The vulnerability is network-accessible and requires no authentication or user interaction to exploit, making it particularly dangerous for internet-facing deployments.

An attacker can leverage this vulnerability to extract sensitive data from the database, including customer personal information, prescription histories, and pharmacy inventory data. In more severe scenarios, attackers could use the SQL injection to gain administrative access, modify pricing data, or pivot to underlying operating system access through database features like xp_cmdshell (SQL Server) or LOAD_FILE/INTO OUTFILE (MySQL).

Root Cause

The root cause is improper input validation (CWE-89: Improper Neutralization of Special Elements used in an SQL Command). The view_product.php script directly incorporates user-controlled parameters into database queries without using parameterized queries or prepared statements. This allows attackers to inject malicious SQL syntax that alters the intended query logic.

Attack Vector

The attack is network-based and can be executed remotely without authentication. An attacker sends crafted HTTP requests to the /pharmacy/view_product.php endpoint with malicious SQL payloads injected into vulnerable parameters. The injected SQL commands are then executed with the privileges of the database user configured for the application.

The vulnerability can be exploited through standard SQL injection techniques including UNION-based injection for data extraction, boolean-based blind injection for inference attacks, and time-based blind injection when error messages are suppressed. For detailed technical information about the vulnerability, refer to the GitHub Bug Report.

Detection Methods for CVE-2026-26705

Indicators of Compromise

• Unusual or malformed HTTP requests to /pharmacy/view_product.php containing SQL syntax such as ', --, UNION, SELECT, or OR 1=1
• Database error messages in application logs indicating SQL syntax errors or unexpected query structures
• Unexplained database queries or data extraction patterns in database audit logs
• Access to sensitive tables or columns from the web application database user that fall outside normal application behavior

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block common SQL injection patterns targeting the /pharmacy/view_product.php endpoint
• Implement database activity monitoring to alert on suspicious query patterns, especially those containing injection indicators
• Enable verbose logging on the web server to capture full request parameters for forensic analysis
• Configure intrusion detection systems (IDS) with signatures for SQL injection attempts in HTTP traffic

Monitoring Recommendations

• Monitor web server access logs for requests to view_product.php with encoded or suspicious characters in query parameters
• Enable database query logging and audit for unusual UNION, SELECT, or administrative commands originating from the application
• Set up alerts for failed SQL queries or database errors that may indicate injection attempts
• Review authentication logs for any unauthorized administrative access that may result from privilege escalation through injection

How to Mitigate CVE-2026-26705

Immediate Actions Required

• Restrict network access to the Pharmacy Point of Sale System to trusted IP ranges only using firewall rules
• Implement a Web Application Firewall (WAF) with SQL injection protection rules as an interim defense layer
• Disable the affected /pharmacy/view_product.php functionality if not critical to operations until a patch is applied
• Review database user privileges and apply the principle of least privilege to limit potential damage from exploitation

Patch Information

At the time of publication, no official patch from the vendor (oretnom23) has been identified. Organizations using this software should monitor the Sourcecodester project page and community forums for security updates. Given the open-source nature of this application, organizations may need to implement code-level fixes independently.

For technical details about the vulnerability, refer to the GitHub Bug Report.

Workarounds

• Implement input validation using allow-lists to reject any input containing SQL metacharacters before processing
• Modify the view_product.php code to use parameterized queries or prepared statements instead of string concatenation
• Deploy reverse proxy with ModSecurity or similar WAF capabilities configured with OWASP Core Rule Set (CRS) for SQL injection protection
• Consider migrating to a more actively maintained pharmacy management solution with proper security development practices

# Example: Apache ModSecurity configuration for SQL injection protection
# Add to httpd.conf or .htaccess

# Enable ModSecurity engine
SecRuleEngine On

# Block requests with common SQL injection patterns to view_product.php
SecRule REQUEST_URI "@contains /pharmacy/view_product.php" \
    "id:1001,phase:2,deny,status:403,\
    chain"
SecRule ARGS "@rx (?i)(union|select|insert|update|delete|drop|--|;)" \
    "msg:'SQL Injection attempt blocked'"