Overview
The cybersecurity world is on high alert due to the discovery of a significant directory traversal vulnerability identified as CVE-2025-55526 in n8n-workflows. This vulnerability, found in the Main Commit ee25413, allows potential attackers to execute a directory traversal attack via the download_workflow function within api_server.py. It’s a critical issue since it puts at risk all the systems that rely on n8n-workflows, potentially leading to system compromise or data leakage.
Vulnerabilities like these are of grave concern as they could enable an attacker to access sensitive data, inject malicious content, or even gain control over the affected system. This blog post aims to provide an in-depth exploration of CVE-2025-55526, its implications, and potential mitigation strategies.
Vulnerability Summary
CVE ID: CVE-2025-55526
Severity: Critical (9.1 CVSS score)
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
n8n-workflows | Main Commit ee25413
How the Exploit Works
The exploit takes advantage of a lack of proper sanitization of user-provided input in the download_workflow function within api_server.py. By sending a specially crafted request, an attacker can manipulate the path that the function accesses, allowing the attacker to traverse the directory structure, potentially accessing sensitive files or data outside of the intended directory.
Conceptual Example Code
The attacker might exploit this vulnerability using an HTTP request similar to the following:
GET /api/download_workflow?workflow=../../../etc/passwd HTTP/1.1
Host: target.example.comIn this example, the attacker attempts to download the /etc/passwd file, which is outside the intended directory. This file often contains user account information and can provide valuable information for further attacks.
Mitigation Guidance
To mitigate this vulnerability, users are strongly encouraged to apply the latest vendor patch as soon as possible. As a temporary mitigation, users may consider using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) to detect and block attempted exploits of this vulnerability.
It is also recommended to enforce the principle of least privilege, ensuring that each user and process has the least amount of privilege necessary to perform its function. This can limit the potential damage caused by this vulnerability.