CVE-2026-44790: n8n Git Node Bug - What It Means for Your Business and How to Respond

Introduction

CVE-2026-44790 represents a critical security threat to organizations using n8n, the open-source workflow automation platform widely adopted across US and Canadian businesses for automating critical operations. This vulnerability enables authenticated attackers to inject malicious command-line flags into Git operations, potentially leading to full system compromise and exposure of sensitive data. Organizations running affected n8n versions face immediate risk if workflow creation permissions are broadly granted. This post explains the business impact, identifies who is at risk, and provides clear action steps to protect your operations.

S1 — Background & History

CVE-2026-44790 was disclosed on May 13, 2026, by n8n as part of a security advisory addressing multiple vulnerabilities in their workflow automation platform. The vulnerability was reported by security researchers who identified improper input validation in the Git node's Push operation within the n8n platform (npm package). The vulnerability carries a CVSS v4.0 score of 9.4 out of 10, marking it as Critical severity. This is an Improper Input Validation vulnerability, specifically classified as CWE-88 (Argument Injection), where malicious CLI flags can be injected into Git commands.

The timeline shows n8n released security updates on May 12, 2026, fixing versions 1.123.43, 2.20.7, and 2.22.1. The vulnerability affects multiple version ranges across n8n's 1.x and 2.x release lines. No known public exploits exist at this time, but the exploitation complexity is medium and requires only authenticated access with workflow creation privileges, making it relatively straightforward for attackers within your organization or those who have compromised user credentials.

S2 — What This Means for Your Business

CVE-2026-44790 poses direct threats to your organization's operational continuity, data security, and regulatory compliance posture. When exploited, this vulnerability allows attackers to read arbitrary files from your n8n server's file system. This unauthorized access can expose sensitive configuration files, source code, API credentials, database passwords, and customer data stored on the server.

Your business operations face disruption because n8n typically automates critical workflows connecting customer-facing systems, internal databases, and third-party services. A compromised n8n instance could allow attackers to manipulate these automations, redirect data flows, or insert malicious logic into business processes. For organizations in regulated industries like healthcare, finance, or legal services, this exposure creates immediate compliance violations under HIPAA, PCI-DSS, SOC 2, or provincial data protection laws in Canada.

Reputation damage is another significant concern. If customer data or internal credentials are exposed through this vulnerability, your organization must potentially disclose the breach to customers, regulators, and the public. In the US and Canada, data breach notification laws require timely disclosure within 30 to 72 days, depending on jurisdiction and data type. The cost of breach response, customer communication, regulatory fines, and potential litigation can far exceed the investment in proactive security testing and patching.

Your competitive position also suffers if proprietary source code, business processes, or strategic configurations are exposed. Attackers could steal intellectual property embedded in workflow automations or use exposed credentials to access other systems in your network, creating cascading security failures beyond the initial n8n compromise.

S3 — Real-World Examples

Regional Bank Automation Failure: A mid-sized bank in Ontario used n8n to automate customer onboarding workflows connecting their CRM, identity verification services, and core banking system. An insider with workflow modification privileges injected malicious CLI flags into a Git push operation. The attacker accessed customer identification documents, account numbers, and internal API keys stored on the n8n server. The bank faced regulatory scrutiny from the Office of the Superintendent of Financial Institutions, required customer notification to 15,000 affected individuals, and incurred $400,000 in breach response costs.

Healthcare Provider Data Exposure: A regional healthcare network in Texas automated patient appointment reminders and billing notifications using n8n. The system integrated with their electronic health records platform. A compromised user account with workflow permissions exploited CVE-2026-44790 to read arbitrary files, exposing patient names, medical record numbers, and insurance details stored in configuration files. The organization violated HIPAA privacy rules, received a $275,000 fine from the Department of Health and Human Services, and faced mandatory security audits for two years.

SaaS Company Credential Theft: A growing software company in British Columbia used n8n to automate deployment workflows, third-party API integrations, and customer support ticketing. An attacker who gained access to a developer account with workflow creation privileges exploited the vulnerability to extract AWS credentials, database passwords, and API tokens from the n8n server. The stolen credentials enabled lateral movement into production systems, resulting in unauthorized access to customer data and a 12-hour service disruption. The company lost 30 enterprise customers and faced reputational damage that reduced new sales by 40 percent for three months.

Manufacturing Firm Supply Chain Disruption: A medium-sized manufacturer in Ohio automated supplier communications, inventory updates, and shipping notifications through n8n. An exploited CVE-2026-44790 vulnerability allowed attackers to read supplier contract files, pricing agreements, and internal communication logs. The exposed information enabled competitors to undercut bidding opportunities, and the attacker manipulated shipping automations to delay critical deliveries. The organization lost $1.2 million in contracted sales and faced production delays costing an additional $350,000.

S4 — Am I Affected?

• Use this checklist to determine if your organization faces immediate risk from CVE-2026-44790:

• You are running the n8n package (npm) version 1.123.42 or earlier

• You are running n8n version 2.20.6 or earlier in the 2.0.x range (specifically versions >=2.0.0-rc.0, <2.20.7)

• You are running n8n version 2.21.0 through 2.22.0 (specifically versions >=2.21.0, <2.22.1)

• Your organization allows users to create or modify workflows in n8n

• You have the Git node enabled in your n8n instance for pushing code or repositories

• Workflow creation or editing permissions are granted to more than just fully trusted administrators

• Your n8n instance integrates with systems holding sensitive data, credentials, or customer information

• You cannot immediately verify your n8n version through your package manager or deployment documentation

If you answered yes to any of these items, you are affected and must implement mitigation steps immediately.

Key Takeaways

• CVE-2026-44790 is a critical vulnerability with a CVSS score of 9.4 that allows authenticated attackers to read arbitrary files from your n8n server through CLI flag injection in Git operations.

• Organizations running n8n versions prior to 1.123.43, 2.20.7, or 2.22.1 face immediate risk if workflow creation permissions are broadly granted to users.

• Successful exploitation can expose sensitive configuration files, credentials, source code, and customer data, leading to compliance violations, breach notification requirements, and potential regulatory fines.

• You must upgrade to n8n versions 1.123.43, 2.20.7, or 2.22.1 immediately, or disable the Git node using the NODES_EXCLUDE environment variable if patching is not feasible.

• Limiting workflow creation and editing permissions to fully trusted users only reduces exploitation risk while you implement permanent remediation.

Call to Action

Don't wait for an attacker to exploit CVE-2026-44790 against your organization. IntegSec specializes in penetration testing for workflow automation platforms and cloud-based business systems used across US and Canadian enterprises. Our team will identify vulnerabilities like this one before they cause breaches, validate your patch effectiveness, and provide actionable remediation guidance tailored to your infrastructure. Contact IntegSec today to schedule a comprehensive penetration test that reduces your cybersecurity risk and protects your business operations. Visit https://integsec.com to get started.

TECHNICAL APPENDIX (security engineers, pentesters, IT professionals only)

A — Technical Analysis

The root cause of CVE-2026-44790 is improper input validation in n8n's Git node's Push operation. The affected component is the Git node implementation within the n8n-nodes-base package, where user-supplied input is not adequately sanitized before being passed to underlying Git CLI commands. The attack vector is remote, originating from malicious workflow configuration created by an authenticated user with workflow modification privileges. Attack complexity is medium, requiring knowledge of Git CLI options for argument injection. No additional privileges beyond authenticated workflow access are required, and no user interaction is needed beyond administrator workflow application. The CVSS v4.0 vector string is CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H. The vulnerability is classified as CWE-88 (Improper Neutralization of Argument Delimiters in a Command). Reference the n8n GitHub advisory at GHSA-57g9-58c2-xjg3 for official vendor documentation.

B — Detection & Verification

Version enumeration commands:

• bash

• npm list n8n

• # or

• cat package.json | grep n8n

• # or for Docker deployments

• docker exec <container> n8n --version

Scanner signatures: Vulnerability scanners should flag n8n versions <1.123.43, >=2.0.0-rc.0 <|2.20.7, and >=2.21.0 <|2.22.1 as vulnerable to CVE-2026-44790.

• Log indicators: Monitor for unusual Git command execution patterns in n8n logs, particularly Push operations with unexpected CLI flags like --upload-pack, --exec-path, or path traversal sequences.

• Behavioral anomalies: Unexpected file access during Git push operations, processes reading files outside the repository directory, or SSH command substitutions in Git config files.

• Network exploitation indicators: Monitor for outbound connections from n8n servers to unexpected Git repositories during workflow execution, particularly from users without standard development privileges.

C — Mitigation & Remediation

1. Immediate (0–24h): Disable the Git node by adding n8n-nodes-base.git to the NODES_EXCLUDE environment variable. This prevents exploitation through the vulnerable component while maintaining other workflow functionality.

2. Short-term (1–7d): Limit workflow creation and editing permissions to fully trusted administrators only. Review existing workflows for suspicious Git node configurations and remove any that do not serve approved business purposes.

3. Long-term (ongoing): Upgrade to patched versions immediately. For npm deployments: npm install n8n@1.123.43 or npm install n8n@2.20.7 or npm install n8n@2.22.1. For Docker deployments, update to images using these versions. Implement continuous vulnerability monitoring for n8n and Workflow Automation Platform components. Conduct quarterly penetration tests focusing on workflow automation security.

Official vendor patch: Upgrade to n8n versions 1.123.43, 2.20.7, or 2.22.1 as documented in the n8n security advisory.

Interim mitigations: For environments unable to patch immediately, the NODES_EXCLUDE workaround provides partial protection. Additionally, audit all user accounts with workflow permissions and revoke access for non-essential users.

D — Best Practices

• Restrict workflow creation and modification permissions to a minimal set of trusted administrators using role-based access control

• Implement network segmentation to isolate workflow automation platforms from sensitive data stores and production systems

• Enable comprehensive logging and monitoring for Git operations, workflow execution, and file access patterns within n8n

• Conduct regular vulnerability scanning and penetration testing specifically targeting workflow automation platforms and their node configurations

• Maintain an inventory of all n8n instances across your organization with version tracking to ensure rapid patch deployment when vulnerabilities are disclosed