CVE-2026-105225
Received Received - Intake

Code Injection in osCommerce Payment Module

Publication date: 2026-10-05

Last updated on: 2026-10-05

Assigner: VulDB

Description
A vulnerability was identified in osCommerce osCommerce2 up to 2.3.4.1. This affects the function include of the file includes/classes/payment.php of the component Payment Page. Such manipulation of the argument MODULE_PAYMENT_INSTALLED leads to code injection. The attack can be executed remotely. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.

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Meta Information

Published
2026-10-05
Last Modified
2026-10-05
Generated
2026-10-05
AI Q&A
2026-10-05
EPSS Evaluated
N/A
NVD
CVE-2026-105225
EUVD
EUVD-2026-92249

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
oscommerce oscommerce2 to 2.3.4.1 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-74 The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Attack-Flow Graph

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Executive Summary

This is a second-order remote code execution vulnerability in osCommerce version 2.3.4.1. It occurs during the storefront checkout process when building the payment-method list. The issue stems from unsafe handling of the MODULE_PAYMENT_INSTALLED configuration constant, which is split on semicolons and used directly as file-include paths and class names without validation or normalization.

Detection Guidance

Check the osCommerce configuration for the MODULE_PAYMENT_INSTALLED setting in the database. Look for entries containing semicolons or path traversal sequences like ../. Inspect the includes/classes/payment.php file for unsafe include operations. Monitor web server logs for unusual file inclusion requests during checkout.

Impact Analysis

An authenticated admin can exploit this by injecting a path traversal sequence into the configuration, pointing to a PHP file uploaded via another flaw. Any storefront customer visiting the checkout payment page triggers execution of the included PHP file as the web server user. This allows arbitrary code execution with the privileges of the web server user, enabling file read/write operations and potential lateral movement within the internal network.

Compliance Impact

This vulnerability allows arbitrary code execution with the privileges of the web server user, enabling file read/write operations. This could lead to unauthorized access to sensitive data, violating GDPR (data protection) and HIPAA (health information privacy) requirements for secure data handling and access controls.

Mitigation Strategies

Update osCommerce to a patched version if available. Validate all entries in MODULE_PAYMENT_INSTALLED against installed modules. Remove any entries with semicolons or path traversal sequences. Restrict admin access to prevent unauthorized configuration changes. Monitor for unauthorized file uploads in the newsletter manager.

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