Sealed Secrets vs HashiCorp Vault -- Secrets Management Compared

Sealed Secrets vs HashiCorp Vault (2026)

Sealed Secrets (secrets management) and HashiCorp Vault (open source) are cybersecurity tools that serve different segments of the market. Sealed Secrets is self-hosted with open source pricing and is best suited for small-to-medium kubernetes teams doing pure gitops without a separate secrets backend. HashiCorp Vault offers cloud-hosted and self-hosted with open source + enterprise pricing and targets teams needing flexible, self-hosted secrets management with extensive plugin ecosystem.

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The Verdict

The choice between Sealed Secrets and HashiCorp Vault depends on your specific requirements, budget, and existing infrastructure. Both are established secrets management tools with different strengths. Evaluate each against your use case, integration needs, and team size to determine the best fit.

Tried Sealed Secrets or HashiCorp Vault? Drop a quick rating.

Sealed Secrets vs HashiCorp Vault at a Glance

Sealed SecretsHashiCorp Vault
CategorySecrets ManagementOpen Source
PricingFree (open source)Free (OSS) / Enterprise from $0.03/hr
Pricing ModelOpen SourceOpen Source + Enterprise
Open SourceYesYes
Cloud HostedNoYes
Self-HostedYesYes
Founded20172015
Rating4.3/54.5/5

Feature Comparison

Key capabilities of Sealed Secrets and HashiCorp Vault compared side by side.

Sealed Secrets

  • +Asymmetric encryption (RSA-4096 keys)
  • +kubeseal CLI for encrypting secrets
  • +SealedSecret CRD for declarative workflows
  • +Private key stored only in the cluster controller
  • +Automatic key rotation with configurable policies
  • +Works with GitOps (Argo CD, Flux)
  • +Namespace-scoped and cluster-wide sealing modes
  • +Re-encryption on cluster restore
  • +Helm chart deployment
  • +Public key export for offline sealing

HashiCorp Vault

  • +Dynamic secrets generation
  • +Data encryption as a service
  • +Identity-based access control
  • +Secret leasing and revocation
  • +Audit logging
  • +Multi-cloud support
  • +PKI certificate management
  • +Database credential rotation

Key Differentiators

Unique to Sealed Secrets

  • SealedSecret CRD for declarative workflows
  • Private key stored only in the cluster controller
  • Works with GitOps (Argo CD, Flux)
  • Namespace-scoped and cluster-wide sealing modes

Unique to HashiCorp Vault

  • Identity-based access control
  • Secret leasing and revocation
  • Audit logging
  • Multi-cloud support

When to Choose Each

Choose Sealed Secrets if...

  • →You need a tool best suited for small-to-medium kubernetes teams doing pure gitops without a separate secrets backend
  • →You want an open-source solution with full code transparency
  • →Open Source pricing fits your budget model

Choose HashiCorp Vault if...

  • →You need a tool best suited for teams needing flexible, self-hosted secrets management with extensive plugin ecosystem
  • →You want an open-source solution with full code transparency
  • →Open Source + Enterprise pricing fits your budget model

Also Worth Considering: SplitSecure

SplitSecure logoSplitSecure
Distributed Security

Why SplitSecure? Distributed secrets management — no vault, no vendor dependency. Splits secrets across devices you control using Shamir Secret Sharing.

Best For

Highest-sensitivity accounts, regulated industries, and MSPs needing zero vendor dependency

Key Features
Shamir Secret Sharing across devicesZero vendor dependency architectureAutomatic audit trail generationNo vault infrastructure required+4 more
Pros
  • +Zero vendor dependency — secrets work if SplitSecure goes down
  • +Secrets never leave your environment
  • +Architecturally resistant to social engineering and account takeover
Cons
  • –Not designed for CI/CD pipeline secrets
  • –Focused on human access, not machine-to-machine
  • –Newer platform with smaller market presence
Self-Hosted
View Profile

Pros & Cons Comparison

HashiCorp Vault

Pros

  • +Massive community and ecosystem
  • +Highly extensible with plugins
  • +Strong enterprise features
  • +Multi-cloud and hybrid support
  • +Free open-source tier

Cons

  • –Steep learning curve
  • –Complex to operate at scale
  • –Requires dedicated infrastructure
  • –Enterprise features require paid license

Sealed Secrets

Pros

  • +No external secrets backend needed; just Git plus cluster
  • +Perfect fit for pure GitOps workflows
  • +Simple mental model: encrypt once, commit, done
  • +Backed by Bitnami (VMware) with stable release cadence

Cons

  • –Key rotation requires re-sealing every secret
  • –Lose the cluster key, lose every sealed secret
  • –No per-key RBAC; anyone who can create a SealedSecret can decrypt it once applied
  • –No rotation or lifecycle features like a real secrets manager

Other Sealed Secrets Alternatives

External Secrets Operator logo
External Secrets Operator

K8s operator that syncs secrets from external stores into Kubernetes Secrets

SOPS logo
SOPS

CLI tool for encrypting YAML/JSON/ENV files with KMS, age, or PGP

Sources & References

  1. Sealed Secrets (Official Site)[Vendor]
  2. Sealed Secrets Reviews on G2[User Reviews]
  3. Sealed Secrets Reviews on TrustRadius[User Reviews]
  4. Sealed Secrets Reviews on PeerSpot[User Reviews]
  5. HashiCorp Vault (Official Site)[Vendor]
  6. HashiCorp Vault Reviews on G2[User Reviews]
  7. HashiCorp Vault Reviews on TrustRadius[User Reviews]
  8. HashiCorp Vault Reviews on PeerSpot[User Reviews]
  9. Gartner Market Guide for Secrets Management[Analyst Report]
  10. Forrester Wave: Secrets Management, Q4 2023[Analyst Report]
  11. GigaOm Radar for Key Management[Analyst Report]
  12. NIST SP 800-57: Recommendation for Key Management[Government Standard]
  13. CIS Controls: Safeguard 3.11 – Encrypt Sensitive Data at Rest[Industry Framework]

Sealed Secrets vs HashiCorp Vault FAQ

Common questions about choosing between Sealed Secrets and HashiCorp Vault.

What is the main difference between Sealed Secrets and HashiCorp Vault?

Sealed Secrets (secrets management) and HashiCorp Vault (open source) are cybersecurity tools that serve different segments of the market. Sealed Secrets is self-hosted with open source pricing and is best suited for small-to-medium kubernetes teams doing pure gitops without a separate secrets backend. HashiCorp Vault offers cloud-hosted and self-hosted with open source + enterprise pricing and targets teams needing flexible, self-hosted secrets management with extensive plugin ecosystem.

Is HashiCorp Vault a good alternative to Sealed Secrets?

The choice between Sealed Secrets and HashiCorp Vault depends on your specific requirements, budget, and existing infrastructure. Both are established secrets management tools with different strengths. Evaluate each against your use case, integration needs, and team size to determine the best fit.

How does HashiCorp Vault pricing compare to Sealed Secrets?

Sealed Secrets pricing: Free (open source) (open source). HashiCorp Vault pricing: Free (OSS) / Enterprise from $0.03/hr (open source + enterprise). The best option depends on your team size, usage patterns, and whether you need cloud-hosted, self-hosted, or hybrid deployment.

Can I migrate from Sealed Secrets to HashiCorp Vault?

Migration from Sealed Secrets to HashiCorp Vault is possible and depends on your specific setup. Both platforms offer APIs that can facilitate data migration. Consider running both tools in parallel during transition to ensure continuity. Check each vendor's migration documentation for specific guidance.

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