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Global vulnerability Government/Federal Agencies HIGH 49m Global malware Enterprise/Multiple Sectors CRITICAL 51m Global data_breach E-commerce and Retail CRITICAL 58m Global vulnerability Government and Public Administration CRITICAL 1h Global vulnerability Technology/Software Development CRITICAL 1h Global general Industrial Control Systems/Manufacturing HIGH 2h Global data_breach Social Media and Virtual Reality Platforms HIGH 2h Global vulnerability Enterprise Security / All Sectors HIGH 2h Global apt Government and Defense CRITICAL 2h Global general Technology / Consumer Protection MEDIUM 2h Global vulnerability Government/Federal Agencies HIGH 49m Global malware Enterprise/Multiple Sectors CRITICAL 51m Global data_breach E-commerce and Retail CRITICAL 58m Global vulnerability Government and Public Administration CRITICAL 1h Global vulnerability Technology/Software Development CRITICAL 1h Global general Industrial Control Systems/Manufacturing HIGH 2h Global data_breach Social Media and Virtual Reality Platforms HIGH 2h Global vulnerability Enterprise Security / All Sectors HIGH 2h Global apt Government and Defense CRITICAL 2h Global general Technology / Consumer Protection MEDIUM 2h Global vulnerability Government/Federal Agencies HIGH 49m Global malware Enterprise/Multiple Sectors CRITICAL 51m Global data_breach E-commerce and Retail CRITICAL 58m Global vulnerability Government and Public Administration CRITICAL 1h Global vulnerability Technology/Software Development CRITICAL 1h Global general Industrial Control Systems/Manufacturing HIGH 2h Global data_breach Social Media and Virtual Reality Platforms HIGH 2h Global vulnerability Enterprise Security / All Sectors HIGH 2h Global apt Government and Defense CRITICAL 2h Global general Technology / Consumer Protection MEDIUM 2h
Vulnerabilities

CVE-2026-42230

Medium
CWE-601 — Weakness Type
Published: May 4, 2026  ·  Modified: May 7, 2026  ·  Source: NVD
CVSS v3
6.1
🔗 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, the /mcp-oauth/register endpoint accepted OAuth client registrations without authentication, allowing arbitrary redirect_uri values to be registered. When a user denies the MCP OAuth consent dialog, the handleDeny handler redirects the user to the registered redirect_uri without validation, enabling an open redirect to an attacker-controlled URL. An attacker can craft a phishing link and send it to a victim; if the victim clicks "Deny" on the consent page, they are silently redirected to an external site. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.

🤖 AI Executive Summary

n8n workflow automation platform contains an open redirect vulnerability in the MCP OAuth endpoint that allows unauthenticated registration of arbitrary redirect URIs. Attackers can craft phishing links to redirect users to malicious sites when they deny OAuth consent.

📄 Description (Arabic)

تحتوي منصة n8n على ثغرة في نقطة نهاية /mcp-oauth/register التي تسمح بتسجيل عملاء OAuth بدون التحقق من الهوية. يمكن للمهاجمين استخدام هذه الثغرة لإنشاء روابط احتيالية تعيد توجيه المستخدمين إلى مواقع خارجية عندما يرفضون الموافقة على OAuth.

🤖 ملخص تنفيذي (AI)

منصة n8n لأتمتة سير العمل تحتوي على ثغرة إعادة توجيه مفتوحة في نقطة نهاية MCP OAuth تسمح بتسجيل عناوين إعادة توجيه عشوائية بدون مصادقة. يمكن للمهاجمين إنشاء روابط تصيد احتيالي لإعادة توجيه المستخدمين إلى مواقع ضارة عند رفضهم الموافقة على OAuth.

🤖 AI Intelligence Analysis Analyzed: May 23, 2026 12:17
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: medium
🏢 Affected Saudi Sectors
telecom government energy
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
6.0
/ 10.0
🔧 Remediation Steps (English)
Upgrade n8n to version 1.123.32, 2.17.4, or 2.18.1 or later. Implement authentication requirements for the /mcp-oauth/register endpoint and validate all redirect_uri values against a whitelist of authorized domains before accepting registrations.
🔧 خطوات المعالجة (العربية)
قم بترقية n8n إلى الإصدار 1.123.32 أو 2.17.4 أو 2.18.1 أو أحدث. قم بتطبيق متطلبات المصادقة لنقطة النهاية /mcp-oauth/register والتحقق من صحة جميع قيم redirect_uri مقابل قائمة بيضاء للنطاقات المصرح بها قبل قبول التسجيلات.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
5.1.1 5.1.2 5.2.1
🔵 SAMA CSF
AC-2 AC-3 SI-4
🟡 ISO 27001:2022
A.9.2.1 A.9.4.3 A.14.2.1
📦 Affected Products / CPE 3 entries
n8n:n8n
n8n:n8n
n8n:n8n:2.18.0
📊 CVSS Score
6.1
/ 10.0 — Medium
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredN — None / Network
User InteractionR — Required
ScopeC — Changed
ConfidentialityL — Low / Local
IntegrityL — Low / Local
AvailabilityN — None / Network
📋 Quick Facts
Severity Medium
CVSS Score6.1
CWECWE-601
EPSS0.06%
Exploit No
Patch ✗ No
Published 2026-05-04
Source Feed nvd
🇸🇦 Saudi Risk Score
6.0
/ 10.0 — Saudi Risk
Priority: MEDIUM
🏷️ Tags
CWE-601
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