CVE-2026-7199: Pharmacy Sales & Inventory SQL Injection

CVE-2026-7199 Overview

A SQL injection vulnerability was discovered in SourceCodester Pharmacy Sales and Inventory System version 1.0. The vulnerability exists in the /ajax.php?action=delete_product endpoint, where the ID argument is improperly sanitized before being used in database queries. This flaw allows remote attackers to manipulate SQL queries by injecting malicious input through the ID parameter, potentially leading to unauthorized data access, modification, or deletion.

Critical Impact
Remote attackers can exploit this SQL injection vulnerability to bypass authentication, extract sensitive pharmacy and inventory data, modify database records, or potentially achieve further system compromise through the publicly available exploit.

Affected Products

SourceCodester Pharmacy Sales and Inventory System 1.0
Web applications using the affected /ajax.php delete product functionality
Systems with exposed network access to the vulnerable endpoint

Discovery Timeline

2026-04-28 - CVE-2026-7199 published to NVD
2026-04-29 - Last updated in NVD database

Technical Details for CVE-2026-7199

Vulnerability Analysis

This SQL injection vulnerability (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component) occurs due to insufficient input validation in the product deletion functionality. When a user submits a request to delete a product via the /ajax.php?action=delete_product endpoint, the application fails to properly sanitize or parameterize the ID argument before incorporating it into SQL queries.

The vulnerability is remotely exploitable without authentication, requiring no user interaction. An attacker can craft malicious requests containing SQL injection payloads in the ID parameter to manipulate the underlying database queries. This can result in unauthorized disclosure of sensitive pharmacy data, modification of inventory records, or deletion of critical information.

The exploit for this vulnerability has been publicly disclosed, increasing the risk of active exploitation in the wild.

Root Cause

The root cause of this vulnerability is improper input validation and the use of unsanitized user input directly in SQL queries. The application fails to implement prepared statements or parameterized queries when processing the ID argument in the delete product function. Instead, user-supplied data is directly concatenated into SQL statements, allowing attackers to inject arbitrary SQL commands.

This is a classic example of CWE-74, where special characters and SQL syntax elements in user input are not properly neutralized before being passed to the database layer.

Attack Vector

The attack vector is network-based, allowing remote exploitation without requiring authentication or user interaction. An attacker can target the vulnerable endpoint by:

Sending crafted HTTP requests to /ajax.php?action=delete_product with malicious SQL payloads in the ID parameter
Using standard SQL injection techniques such as UNION-based injection, boolean-based blind injection, or time-based blind injection
Extracting database contents, modifying records, or escalating access depending on database permissions

The vulnerability is accessible over the network, making any internet-facing deployment of this application a potential target. Technical details and proof-of-concept information have been documented in the GitHub Issue Discussion and the VulDB Vulnerability Overview.

Detection Methods for CVE-2026-7199

Indicators of Compromise

Unusual HTTP requests to /ajax.php?action=delete_product containing SQL syntax characters such as single quotes, semicolons, UNION keywords, or comment sequences
Database error messages in application logs indicating malformed SQL queries
Unexpected modifications or deletions in product inventory tables
Anomalous database query patterns or execution of unauthorized SELECT/INSERT/UPDATE/DELETE statements

Detection Strategies

Implement web application firewall (WAF) rules to detect and block SQL injection patterns in the ID parameter
Monitor HTTP access logs for requests to /ajax.php?action=delete_product containing suspicious payloads
Enable database query logging to identify anomalous or malformed SQL statements
Deploy intrusion detection systems (IDS) with signatures for common SQL injection attack patterns

Monitoring Recommendations

Set up real-time alerting for database errors related to SQL syntax violations
Monitor for unusual spikes in traffic to the vulnerable endpoint
Implement database activity monitoring to track unauthorized data access or modifications
Review web server access logs regularly for exploitation attempts targeting the delete_product action

How to Mitigate CVE-2026-7199

Immediate Actions Required

Restrict network access to the Pharmacy Sales and Inventory System to trusted IP addresses only
Disable or remove the vulnerable /ajax.php?action=delete_product endpoint if not immediately required
Implement input validation to allow only numeric values for the ID parameter
Deploy a web application firewall (WAF) with SQL injection protection rules

Patch Information

No official vendor patch has been identified at this time. SourceCodester has been notified of the vulnerability. Organizations using this software should monitor SourceCodester for security updates. Additional technical details are available in the VulDB Submission Report.

Workarounds

Implement prepared statements with parameterized queries for all database interactions involving user input
Apply strict input validation to ensure the ID parameter accepts only integer values
Use a web application firewall to filter and block SQL injection attempts
Isolate the vulnerable application from public network access until a proper fix is applied
Consider replacing the vulnerable component with a secure alternative that implements proper input sanitization

bash

# Example: Apache mod_rewrite rule to block suspicious ID values
# Add to .htaccess or Apache configuration
RewriteEngine On
RewriteCond %{QUERY_STRING} action=delete_product
RewriteCond %{QUERY_STRING} id=.*[^\d].* [NC,OR]
RewriteCond %{QUERY_STRING} (union|select|insert|delete|update|drop|--|;) [NC]
RewriteRule .* - [F,L]