Estimated reading time: 8 minutes

Key Takeaways:

  • The n8n automation platform is affected by three critical vulnerabilities allowing authenticated attackers to achieve full Remote Code Execution (RCE).
  • Vulnerabilities involve the Git node (command injection), Merge node (arbitrary file write), and the Expression engine (sandbox escape).
  • Despite requiring authentication, these flaws pose a massive risk to enterprise supply chains due to the high-level permissions n8n typically holds.
  • Immediate updates to versions 2.5.0 or 1.123.10 (and respective branches) are required to mitigate exploitation risks.

Table of Contents:

The n8n workflow automation platform, frequently utilized by technical teams for its “fair-code” flexibility and AI integration capabilities, has been identified with three critical security vulnerabilities. These flaws-CVE-2026-25053, CVE-2026-25056, and CVE-2026-25049-enable authenticated attackers to achieve remote code execution (RCE) and gain total control over the host server.

Recent security research indicates that the Popular n8n Platform Hit by Triple Threat of RCE Flaws involves vulnerabilities within core components: the Git node, the Merge node, and the expression evaluation engine. While these vulnerabilities require authentication, the risk remains high in enterprise environments where workflow creation permissions are often granted to a broad range of developers, data analysts, and IT staff.

The impact of these vulnerabilities is amplified by the role n8n plays within modern infrastructure. As a centralized automation hub, n8n often possesses high-level permissions to interact with internal databases, cloud environments, and third-party APIs. A compromise of the n8n host server serves as a gateway for lateral movement and data exfiltration.

Technical Analysis of CVE-2026-25053: Git Node Command Injection

CVE-2026-25053 focuses on the platform’s version control integration. The Git node is a standard component used to automate repository management, allowing users to pull, commit, and push code directly from a workflow. The vulnerability stems from improper input sanitization within the Git node’s execution logic.

Authenticated users with the ability to create or modify workflows can craft malicious inputs that the application fails to validate before passing them to the underlying system shell. This oversight allows for the execution of arbitrary system commands on the n8n host. Furthermore, this flaw enables arbitrary file reading. An attacker can leverage the Git node to access sensitive configuration files, such as the .env file containing database credentials, encryption keys, and API tokens for connected services.

Because the n8n process typically runs with the permissions necessary to manage the local filesystem for its own operations, the scope of command execution is often sufficient to install persistent backdoors or deploy secondary payloads.

Technical Analysis of CVE-2026-25056: Merge Node File Write

The second vulnerability, CVE-2026-25056, involves the Merge node’s SQL Query mode. This node is designed to combine data from multiple sources, and the SQL Query mode provides a flexible way to join datasets using SQL syntax.

The flaw allows an authenticated attacker to write arbitrary files to any location on the server’s filesystem where the n8n process has write permissions. By exploiting the SQL Query execution path, an attacker can specify a file path and content to be written. This is particularly dangerous if the attacker targets directories that are executable or contain configuration scripts.

For example, an attacker might write a web shell into a publicly accessible directory or overwrite a startup script to ensure code execution whenever the service restarts. This capability facilitates remote code execution by placing malicious scripts in the execution path of the server.

Technical Analysis of CVE-2026-25049: Expression Evaluation Sandbox Escape

CVE-2026-25049, with a CVSS score of 9.3, targets the expression evaluation engine. n8n uses expressions to allow users to manipulate data dynamically using JavaScript-like syntax. This engine is supposed to operate within a restricted sandbox environment to prevent users from accessing the underlying Node.js process.

However, security researchers identified methods to bypass these restrictions. By crafting specific expressions, an authenticated user can escape the sandbox. Once the sandbox is breached, the attacker gains the ability to execute arbitrary JavaScript code with the full privileges of the n8n application process. This type of vulnerability is often more difficult to detect than standard command injection because the malicious activity occurs within the context of legitimate application logic.

The disclosure of these RCE flaws coincides with an increased interest in automation platforms among threat actors. Utilizing a cyber threat intelligence platform allows organizations to track how these specific CVEs are discussed in the wild. Information gathered from a dark web monitoring service suggests that exploits for automation tools like n8n are highly valued because they provide a “living off the land” approach to infrastructure compromise.

Underground forum intelligence indicates that attackers are increasingly looking for ways to exploit authenticated vulnerabilities in internal tools. Once initial access is gained-often through credential stuffing or phishing-attackers seek out platforms like n8n to escalate privileges. Furthermore, the integration of real-time ransomware intelligence is essential for identifying the early stages of such an attack, where n8n might be used to disable security backups or distribute malware.

Supply Chain and Enterprise Risk Factors

Organizations must view n8n as a critical component of their internal supply chain. Supply Chain Information Security is necessary because a vulnerability in an automation tool can compromise every system it connects to. If n8n has access to a company’s AWS environment, GitHub repositories, and customer databases, a single RCE flaw becomes a multi-vector breach.

The “authenticated” nature of these vulnerabilities does not significantly lower the risk profile. If a developer’s account is compromised, the attacker can use these n8n flaws to move from a limited user account to full server-level access. Proactive Breach Detection strategies are critical for identifying such lateral movement early.

Technical Remediation and Mitigation Strategies

The primary remediation for these vulnerabilities is the immediate update of the n8n platform to the patched versions specified by the maintainers.

Remediation for CVE-2026-25053 (Git Node):

  • Update to version 2.5.0 or 1.123.10.
  • Audit all workflows utilizing the Git node for unusual command patterns.

Remediation for CVE-2026-25056 (Merge Node):

  • Update to version 2.4.0 or 1.118.0.
  • Restrict write permissions of the n8n service account to the minimum necessary directories.

Remediation for CVE-2026-25049 (Expression Evaluation):

  • Ensure the platform is updated to the latest available security release to benefit from the refined sandbox logic.

PurpleOps Expertise in Vulnerability Management

PurpleOps provides the technical expertise and tools necessary to navigate complex vulnerability landscapes. By leveraging our Cyber Threat Intelligence services, organizations can stay ahead of emerging threats like the n8n triple-RCE cluster.

For organizations concerned about the security of their internal automation and CI/CD pipelines, PurpleOps offers specialized and Red Team Operations. Our analysts simulate real-world attacks, including sandbox escapes and command injection, to identify weaknesses in your deployment of tools like n8n.

Furthermore, our Dark Web Monitoring service ensures that if credentials for your internal tools are leaked, you receive immediate notification. Visit our Platform page for more information or explore our full suite of PurpleOps Solutions.

Practical Takeaways for Technical Teams

  • Vulnerability Scanning: Ensure internal scanners are updated with the latest signatures for these specific CVEs.
  • Environment Isolation: If running n8n in Docker, do not run as root and avoid mounting the Docker socket inside the container.
  • Secret Management: Move sensitive credentials out of environment variables and into a dedicated secret management service.
  • Audit Trails: Enable and centralize n8n logs. Monitor for instances of child_process.exec or similar calls within engine logs.

Practical Takeaways for Business Leaders

  • Review Internal Access: Re-evaluate who has Creator or Editor access to automation platforms. Treat these permissions as administrative level.
  • Supply Chain Audit: Identify where n8n sits in your data flow. If it handles PII, prioritize patching and audits.
  • Incident Response: Update plans to include scenarios where a centralized automation hub is compromised. Learn more about Protecting against Ransomware.

Frequently Asked Questions

What are the specific CVEs affecting n8n?
The n8n platform is hit by a triple threat: CVE-2026-25053 (Git node), CVE-2026-25056 (Merge node), and CVE-2026-25049 (Expression engine).

Are these vulnerabilities exploitable by unauthenticated users?
No, these flaws require the attacker to be authenticated with permissions to create or edit workflows. However, compromised internal credentials make this a high-likelihood risk.

How does CVE-2026-25049 differ from standard command injection?
CVE-2026-25049 is a sandbox escape. Instead of injecting a shell command, it allows the attacker to break out of the JavaScript restricted environment to execute arbitrary code with application-level privileges.

What is the recommended remediation for n8n users?
Users should immediately update to version 2.5.0, 1.123.10, or later, depending on their current release branch, to close these security gaps.