OpenBao

Security & Compliance intermediate

OpenBao is an open-source secrets management and data protection platform, forked from HashiCorp Vault and governed by the Linux Foundation, providing API-compatible authentication and dynamic secret engines.

Summary

OpenBao is an open-source platform for secrets management, encryption, and identity-based access to sensitive data. It originated as a community fork of HashiCorp Vault after Vault moved to the Business Source License, and is now a Linux Foundation project under the MPL 2.0 license.

What is OpenBao?

OpenBao centralises the storage, access, and lifecycle of secrets—API keys, database credentials, certificates, and encryption keys—so they are no longer scattered across configuration files and source code. Applications and workloads authenticate against OpenBao and receive short-lived, dynamically generated credentials instead of long-lived static ones.

Because it forked from Vault, OpenBao remains API-compatible at the level of its core authentication methods (such as JWT/OIDC) and its dynamic secret engines, so much existing Vault tooling and integration knowledge carries over. While some proprietary Vault Enterprise capabilities are not part of OpenBao, the project has also added features of its own—including open-source namespaces for multi-tenancy, which are an enterprise-only feature in Vault. For organisations pursuing an open-source-first or sovereignty-driven strategy, OpenBao is a vendor-neutral alternative—though compatibility for any specific workflow should be verified in practice rather than assumed.

Why is OpenBao relevant?

  • Open-source secrets management: Linux Foundation governance and an OSI-approved license reduce vendor lock-in
  • Dynamic secrets: Short-lived, on-demand credentials shrink the attack surface compared to static secrets
  • Vault compatibility: API-compatible core auth methods and secret engines ease migration and reuse of existing know-how
  • Sovereignty hedge: A predictable open-source path for teams wary of proprietary licensing or roadmap changes

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