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Vulnerabilities

CVE-2026-42232

High
CWE-1321 — Weakness Type
Published: May 4, 2026  ·  Modified: May 11, 2026  ·  Source: NVD
CVSS v3
8.8
🔗 NVD Official
📄 Description (English)

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, an authenticated user with permission to create or modify workflows could achieve global prototype pollution via the XML Node leading to RCE when combined with other nodes exploiting the prototype pollution. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.

🤖 AI Executive Summary

CVE-2026-42232 is a critical prototype pollution vulnerability in n8n workflow automation platform affecting versions prior to 1.123.32, 2.17.4, and 2.18.1. Authenticated users with workflow creation/modification permissions can exploit the XML Node to achieve global prototype pollution, potentially leading to Remote Code Execution (RCE) when combined with other nodes. This poses significant risk to Saudi organizations using n8n for critical automation workflows, particularly in financial and government sectors.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: May 8, 2026 16:33
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations in financial services (banking sector under SAMA oversight), government agencies (NCA jurisdiction), healthcare institutions, and energy sector (ARAMCO and related entities) face significant risk. The vulnerability particularly impacts organizations using n8n for critical workflow automation involving data processing, API integrations, and system orchestration. Compromised workflows could lead to unauthorized data access, financial transaction manipulation, and infrastructure disruption. The threat is elevated for organizations with multiple n8n instances managing sensitive cross-system integrations.
🏢 Affected Saudi Sectors
Banking and Financial Services Government and Public Administration Healthcare Energy and Utilities Telecommunications Manufacturing Retail and E-commerce
⚖️ Saudi Risk Score (AI)
8.5
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Audit all n8n instances in your environment and identify current versions
2. Restrict workflow creation/modification permissions to trusted administrators only
3. Implement network segmentation to isolate n8n instances from critical systems
4. Monitor n8n logs for suspicious workflow modifications and XML Node usage
5. Disable XML Node functionality if not actively required

PATCHING GUIDANCE:
1. Upgrade to patched versions: 1.123.32, 2.17.4, or 2.18.1 immediately
2. Test patches in non-production environments first
3. Plan maintenance windows for production upgrades
4. Verify workflow functionality post-upgrade

COMPENSATING CONTROLS (if immediate patching not possible):
1. Implement strict RBAC limiting workflow modification to essential personnel
2. Enable audit logging for all workflow changes
3. Use Web Application Firewall (WAF) rules to detect prototype pollution patterns
4. Implement API rate limiting and request validation
5. Deploy runtime application self-protection (RASP) if available

DETECTION RULES:
1. Monitor for XML Node usage in workflow definitions
2. Alert on workflow modifications by non-admin accounts
3. Track prototype pollution indicators: __proto__, constructor, prototype in request payloads
4. Monitor n8n process execution for unexpected child processes
5. Log all API calls to workflow creation/modification endpoints
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تدقيق جميع مثيلات n8n في بيئتك وتحديد الإصدارات الحالية
2. تقييد أذونات إنشاء/تعديل سير العمل للمسؤولين الموثوقين فقط
3. تنفيذ تقسيم الشبكة لعزل مثيلات n8n عن الأنظمة الحرجة
4. مراقبة سجلات n8n للتعديلات المريبة على سير العمل واستخدام عقدة XML
5. تعطيل وظيفة عقدة XML إذا لم تكن مطلوبة بنشاط

إرشادات التصحيح:
1. الترقية إلى الإصدارات المصححة: 1.123.32 أو 2.17.4 أو 2.18.1 فوراً
2. اختبار التصحيحات في بيئات غير الإنتاج أولاً
3. التخطيط لنوافذ الصيانة لترقيات الإنتاج
4. التحقق من وظيفة سير العمل بعد الترقية

الضوابط البديلة (إذا لم يكن التصحيح الفوري ممكناً):
1. تنفيذ RBAC صارم يقيد تعديل سير العمل للموظفين الأساسيين
2. تفعيل تسجيل التدقيق لجميع تغييرات سير العمل
3. استخدام قواعد جدار الحماية (WAF) للكشف عن أنماط تلويث النموذج الأولي
4. تنفيذ تحديد معدل API والتحقق من الطلبات
5. نشر حماية التطبيق الذاتية في وقت التشغيل (RASP) إن أمكن

قواعد الكشف:
1. مراقبة استخدام عقدة XML في تعريفات سير العمل
2. التنبيه على تعديلات سير العمل من قبل حسابات غير إدارية
3. تتبع مؤشرات تلويث النموذج الأولي: __proto__ و constructor و prototype في حمولات الطلب
4. مراقبة تنفيذ عملية n8n للعمليات الفرعية غير المتوقعة
5. تسجيل جميع استدعاءات API لنقاط نهاية إنشاء/تعديل سير العمل
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Access Control Policies ECC 2024 A.8.1.1 - User Registration and Access Rights ECC 2024 A.12.4.1 - Event Logging ECC 2024 A.12.4.3 - Administrator and Operator Logs ECC 2024 A.14.2.1 - Secure Development Policy
🔵 SAMA CSF
SAMA CSF ID.AM-2 - Software Inventory SAMA CSF PR.AC-1 - Access Control SAMA CSF PR.AC-4 - Access Rights Management SAMA CSF DE.AE-3 - Event Detection SAMA CSF DE.CM-1 - System Monitoring
🟡 ISO 27001:2022
ISO 27001:2022 A.5.15 - Access Control ISO 27001:2022 A.8.1 - User Registration and Access Rights ISO 27001:2022 A.8.2 - User Access Provisioning ISO 27001:2022 A.12.4 - Logging ISO 27001:2022 A.14.2 - Secure Development
🟣 PCI DSS v4.0.1
PCI DSS 2.1 - Configuration Standards PCI DSS 6.2 - Security Patches PCI DSS 7.1 - Access Control PCI DSS 10.2 - User Access Logging
📦 Affected Products / CPE 3 entries
n8n:n8n
n8n:n8n
n8n:n8n:2.18.0
📊 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-1321
EPSS0.13%
Exploit No
Patch ✗ No
Published 2026-05-04
Source Feed nvd
🇸🇦 Saudi Risk Score
8.5
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
CWE-1321
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