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CVE-2026-40488

High ⚡ Exploit Available

CWE-434 — Weakness Type

                    Published: Apr 20, 2026                      ·  Modified: Apr 27, 2026                      ·  Source: NVD                

CVSS v3

8.8

🔗 NVD Official

📄 Description (English)

Magento Long Term Support (LTS) is an unofficial, community-driven project provides an alternative to the Magento Community Edition e-commerce platform with a high level of backward compatibility. Prior to version 20.17.0, the product custom option file upload in OpenMage LTS uses an incomplete blocklist (`forbidden_extensions = php,exe`) to prevent dangerous file uploads. This blocklist can be trivially bypassed by using alternative PHP-executable extensions such as `.phtml`, `.phar`, `.php3`, `.php4`, `.php5`, `.php7`, and `.pht`. Files are stored in the publicly accessible `media/custom_options/quote/` directory, which lacks server-side execution restrictions for some configurations, enabling Remote Code Execution if this directory is not explicitly denied script execution. Version 20.17.0 patches the issue.

🤖 AI Executive Summary

OpenMage LTS versions prior to 20.17.0 contain a critical file upload vulnerability in custom option handling that allows Remote Code Execution through bypassing an incomplete PHP extension blocklist. Attackers can upload malicious PHP files using alternative extensions (.phtml, .phar, .php3-7, .pht) to publicly accessible directories, leading to complete system compromise. This vulnerability is particularly severe for Saudi e-commerce platforms as it enables unauthenticated code execution with high exploitability.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 24, 2026 00:37

🇸🇦 Saudi Arabia Impact Assessment

This vulnerability poses critical risk to Saudi e-commerce sector, particularly affecting online retailers, marketplace platforms, and payment processors using OpenMage LTS. High-risk sectors include: (1) Banking/SAMA-regulated fintech platforms processing payments through Magento; (2) Retail and e-commerce companies (major Saudi retailers, Noon, Zando-like platforms); (3) Government e-procurement systems if using OpenMage; (4) Telecom companies (STC, Mobily) with online services; (5) Healthcare e-commerce platforms. The vulnerability enables complete server compromise, data theft, payment fraud, and supply chain attacks affecting downstream customers.

🏢 Affected Saudi Sectors

E-commerce and Retail Banking and Financial Services Government and Public Sector Telecommunications Healthcare Logistics and Supply Chain Payment Processing

🎯 MITRE ATT&CK Techniques

T1190 - Exploit Public-Facing Application T1434 - Exploit for Privilege Escalation T1505 - Server Software Component T1547 - Boot or Logon Autostart Execution T1059 - Command and Scripting Interpreter T1133 - External Remote Services T1040 - Network Sniffing

⚖️ Saudi Risk Score (AI)

9.1

/ 10.0

🔧 Remediation Steps (English)

IMMEDIATE ACTIONS:

1. Identify all OpenMage LTS installations in your environment and document versions

2. Disable file uploads in custom options immediately if not critical to operations

3. Implement strict web server configuration to prevent script execution in media/custom_options/quote/ directory



WEB SERVER HARDENING (Apache):

Add to .htaccess in media/custom_options/quote/:

<FilesMatch "\.ph(p[3-7]?|ar|tml|t)$">

  Deny from all

</FilesMatch>

<FilesMatch ".*">

  php_flag engine off

</FilesMatch>



Nginx configuration:

add_type text/plain .php .phtml .phar .php3 .php4 .php5 .php7 .pht;

location ~ \.ph(p[3-7]?|ar|tml|t)$ { deny all; }



PATCHING:

1. Upgrade to OpenMage LTS 20.17.0 or later immediately

2. If upgrade not possible, apply vendor security patches when available

3. Test patches in staging environment before production deployment



COMPENSATING CONTROLS:

1. Implement Web Application Firewall (WAF) rules to block uploads with suspicious extensions

2. Enable file integrity monitoring on media/custom_options/ directory

3. Restrict file upload functionality to authenticated users only

4. Implement strict input validation: whitelist only safe extensions (.jpg, .png, .pdf)

5. Store uploaded files outside web root if possible

6. Disable PHP execution in all upload directories via server configuration



DETECTION:

1. Monitor for POST requests to custom option upload endpoints with suspicious file extensions

2. Alert on creation of .phtml, .phar, .php3-7, .pht files in media/custom_options/ directory

3. Monitor for HTTP 200 responses followed by execution attempts on uploaded files

4. Log Analysis: Search for patterns like "custom_options/quote/.*\.(phtml|phar|php[3-7]|pht)"

5. File system monitoring: Alert on executable file creation in media/custom_options/quote/

🔧 خطوات المعالجة (العربية)

الإجراءات الفورية:

1. حدد جميع تثبيتات OpenMage LTS في بيئتك وتوثيق الإصدارات

2. عطّل تحميل الملفات في الخيارات المخصصة فوراً إذا لم تكن حرجة

3. طبّق تكوين خادم ويب صارم لمنع تنفيذ البرامج النصية في مجلد media/custom_options/quote/

تقسية خادم الويب (Apache):

أضف إلى .htaccess في media/custom_options/quote/:

Deny from all

</FilesMatch>

تكوين Nginx:

أضف قواعد لحظر امتدادات PHP البديلة وتعطيل تنفيذ PHP

التصحيح:

1. قم بالترقية إلى OpenMage LTS 20.17.0 أو أحدث فوراً

2. إذا لم يكن الترقية ممكنة، طبّق تصحيحات الأمان من المورد

3. اختبر التصحيحات في بيئة التطوير قبل الإنتاج

الضوابط البديلة:

1. طبّق قواعد جدار حماية تطبيقات الويب (WAF) لحظر التحميلات بامتدادات مريبة

2. فعّل مراقبة سلامة الملفات على مجلد media/custom_options/

3. قيّد وظيفة تحميل الملفات للمستخدمين المصرح لهم فقط

4. طبّق التحقق الصارم من المدخلات: قائمة بيضاء بامتدادات آمنة فقط

5. خزّن الملفات المحملة خارج جذر الويب إن أمكن

6. عطّل تنفيذ PHP في جميع مجلدات التحميل

الكشف:

1. راقب طلبات POST إلى نقاط نهاية تحميل الخيارات المخصصة بامتدادات مريبة

2. نبّه عند إنشاء ملفات .phtml و .phar و .php3-7 و .pht في مجلد media/custom_options/

3. راقب محاولات التنفيذ على الملفات المحملة

4. تحليل السجلات: ابحث عن أنماط الملفات المريبة

5. مراقبة نظام الملفات: نبّه عند إنشاء ملفات قابلة للتنفيذ

📋 Regulatory Compliance Mapping

🟢 NCA ECC 2024

ECC 2024 A.14.2.1 - Information security requirements in third-party agreements ECC 2024 A.12.6.1 - Management of technical vulnerabilities ECC 2024 A.14.2.5 - Addressing information security in supplier relationships ECC 2024 A.12.3.1 - Configuration management

🔵 SAMA CSF

SAMA CSF ID.BE-3.1 - Organizational resilience objectives SAMA CSF PR.DS-6 - Data is protected from unauthorized access SAMA CSF PR.IP-1 - Security policies and procedures SAMA CSF DE.CM-1 - The network is monitored for unauthorized connections

🟡 ISO 27001:2022

ISO 27001:2022 A.8.1.1 - Inventory of information and other assets ISO 27001:2022 A.8.3.1 - Segregation of networks ISO 27001:2022 A.12.2.1 - Configuration management ISO 27001:2022 A.12.6.1 - Management of technical vulnerabilities ISO 27001:2022 A.14.2.1 - Supplier security requirements

🟣 PCI DSS v4.0.1

PCI DSS 6.2 - Ensure security patches are installed PCI DSS 6.5.8 - Improper access control PCI DSS 11.2 - Vulnerability scanning PCI DSS 2.2.4 - Configure system security parameters

🔗 References & Sources 1

🔗

https://github.com/OpenMage/magento-lts/security/advisories/GHSA-3j5q-7q7h-2hhv

security-advisories@github.com

Vendor Advisory Exploit

📦 Affected Products / CPE 1 entries

openmage:magento

📊 CVSS Score

8.8

/ 10.0 — High

📊 CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack VectorN — None / Network

Attack ComplexityL — Low / Local

Privileges RequiredL — Low / Local

User InteractionN — None / Network

ScopeU — Unchanged

ConfidentialityH — High

IntegrityH — High

AvailabilityH — High

📋 Quick Facts

Severity High

CVSS Score8.8

CWECWE-434

EPSS0.12%

Exploit ✓ Yes

Patch ✗ No

Published 2026-04-20

Source Feed nvd

🇸🇦 Saudi Risk Score

9.1

/ 10.0 — Saudi Risk

Priority: CRITICAL

🏷️ Tags

exploit-available CWE-434

🏢 Vendor Advisories

🔗 https://github.com/OpenMage/magento-lts/security/adv...

⚡ Actions

🔗 NVD Official Page ⚡ Exploit-DB Search 🐙 GitHub PoC Search 🎯 MITRE ATT&CK 📊 CVE Details

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CVE-2026-40488

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