HashiCorp Vault 1.18 introduces support for IPv6 and CMPv2 while improving security team user experience. Key feature additions include CMPv2 PKI support, adaptive overload protection, password rotation for static PostgreSQL database accounts, Raft library updates, and improved UI support for AWS WIF and KVv2 secrets path management. The latest release also includes more new features, workflow enhancements, general improvements, and bug fixes.