CVE-2026-7127: Pharmacy Sales & Inventory System SQLi Flaw

CVE-2026-7127 Overview

A SQL Injection vulnerability has been identified in SourceCodester Pharmacy Sales and Inventory System version 1.0. This vulnerability affects the file /ajax.php?action=delete_receiving where manipulation of the ID argument enables SQL injection attacks. The vulnerability can be exploited remotely over the network without authentication, potentially allowing attackers to manipulate database queries, extract sensitive information, or modify data within the pharmacy management system.

Critical Impact
This SQL injection vulnerability in a pharmacy management system could allow unauthorized access to sensitive patient and medication data, inventory manipulation, or complete database compromise.

Affected Products

SourceCodester Pharmacy Sales and Inventory System 1.0

Discovery Timeline

2026-04-27 - CVE-2026-7127 published to NVD
2026-04-29 - Last updated in NVD database

Technical Details for CVE-2026-7127

Vulnerability Analysis

This vulnerability is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), commonly referred to as Injection. The affected endpoint /ajax.php?action=delete_receiving 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 then executed by the database engine.

The vulnerability is particularly concerning because it exists in a healthcare-related application handling pharmacy sales and inventory data. Successful exploitation could lead to unauthorized disclosure of patient information, medication records, and financial transaction data. Attackers could also manipulate inventory records, potentially causing operational disruptions or enabling fraudulent activities.

Root Cause

The root cause of this vulnerability is improper input validation and failure to use parameterized queries or prepared statements when processing the ID parameter in database operations. The application directly concatenates user input into SQL queries without proper sanitization, escaping, or the use of secure coding practices that would prevent injection attacks.

Attack Vector

The attack can be executed remotely over the network without requiring authentication. An attacker can craft malicious HTTP requests to the vulnerable endpoint /ajax.php?action=delete_receiving with specially crafted SQL payloads in the ID parameter. The exploit has been made available to the public, as documented in the GitHub Issue Discussion, increasing the risk of widespread exploitation.

The network-accessible nature of this vulnerability means that any instance of the application exposed to the internet or an untrusted network is potentially at risk. The low complexity of exploitation combined with no authentication requirements makes this vulnerability particularly attractive to attackers.

Detection Methods for CVE-2026-7127

Indicators of Compromise

Unusual or malformed HTTP requests to /ajax.php?action=delete_receiving containing SQL keywords such as UNION, SELECT, DROP, or comment sequences like -- or /*
Database error messages in application logs indicating syntax errors or unexpected query behavior
Anomalous database queries or access patterns in database audit logs
Unexpected changes to inventory records or deletion of receiving data without corresponding legitimate user activity

Detection Strategies

Deploy web application firewall (WAF) rules to detect and block SQL injection patterns targeting the /ajax.php endpoint
Implement application-level logging to capture all requests to the vulnerable endpoint with full parameter details
Configure database activity monitoring to alert on suspicious query patterns or unauthorized data access
Use intrusion detection systems (IDS) with signatures for common SQL injection attack patterns

Monitoring Recommendations

Enable detailed access logging for the web server hosting the Pharmacy Sales and Inventory System
Monitor database query logs for anomalous patterns including unexpected UNION statements or data exfiltration attempts
Set up alerts for multiple failed or malformed requests to the /ajax.php endpoint from the same source
Review authentication logs for any unauthorized access following potential exploitation attempts

How to Mitigate CVE-2026-7127

Immediate Actions Required

Restrict network access to the Pharmacy Sales and Inventory System to trusted networks only until a patch is available
Implement WAF rules to filter malicious SQL injection payloads targeting the ID parameter
Review database permissions and apply the principle of least privilege to limit potential damage from successful exploitation
Enable comprehensive logging and monitoring to detect exploitation attempts

Patch Information

At the time of publication, no official patch has been released by SourceCodester. Organizations using this software should monitor the SourceCodester website for security updates and consider implementing the workarounds below until a fix is available. Additional technical details are available through the VulDB Vulnerability Details.

Workarounds

Place the application behind a reverse proxy or WAF with SQL injection filtering capabilities
Implement input validation at the web server level using ModSecurity or similar tools to sanitize the ID parameter
If source code access is available, modify the vulnerable endpoint to use parameterized queries or prepared statements
Consider disabling or restricting access to the /ajax.php?action=delete_receiving endpoint if the functionality is not critical to operations
Isolate the database server and limit its network exposure to reduce the attack surface

bash

# Example ModSecurity rule to block SQL injection attempts on the vulnerable endpoint
SecRule ARGS:ID "@detectSQLi" \
    "id:100001,\
    phase:2,\
    deny,\
    status:403,\
    log,\
    msg:'SQL Injection attempt blocked on delete_receiving endpoint',\
    logdata:'Matched Data: %{MATCHED_VAR} found within %{MATCHED_VAR_NAME}'"