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Docker Scout alternatives for Kubernetes vulnerability scanning

The usual reason to look past Docker Scout is that it stops at the registry. The moment the question becomes “is this CVE running in production, and since when?”, a registry scanner cannot answer it.

Facts last checked . Prices and features change — verify with the vendor before deciding.

What Docker Scout does well

Before the list: Docker Scout is a good tool for the right team. Docker Scout is Docker’s image analysis service: layer-level SBOMs, vulnerability matching against many advisory sources, and base-image recommendations, integrated into Docker Desktop and Docker Hub.

  • Excellent base-image recommendations and layer-level attribution of vulnerabilities.
  • Pulls from a broad set of advisory sources including CISA KEV and EPSS data.
  • Integrated into Docker Desktop, Docker Hub and CI with minimal setup.
  • Cheap and published: free for one repository, unlimited with Docker Team at $15 per user per month.

Docker Scout pricing

Docker Scout is free for one repository. Unlimited repositories come with Docker Team at $15 per user per month or Docker Business at $24 per user per month. Pricing is per Docker seat and unrelated to the number of clusters you run.

Docker Scout alternatives

1. StackRadar (that's us)

StackRadar keeps a CycloneDX SBOM for every image running in your Kubernetes clusters and re-checks it against OSV.dev advisories as they land — no rescan. Findings are ranked by the Radar Score, which combines CVSS, EPSS and the CISA KEV catalogue in a published formula, and every finding carries its workload, Helm release and ArgoCD application. One dashboard covers every cluster, with 30 days to two years of history by plan. The scanner installs as one Helm chart, its source is published, releases are signed, and data stays in the EU. Free for one cluster; Pro $59 per month; Business $199 per month.

Where Docker Scout is stronger: you want vulnerability feedback at build time, in Docker Desktop and CI. See StackRadar vs Docker Scout for the full comparison.

2. Snyk Container

Snyk Container is the container-scanning product in Snyk’s developer security platform, scanning images from the CLI, CI and registries and opening automated base-image upgrade pull requests.

Best for: Your priority is shifting left: fixing images in the pipeline before they ship. Pricing: Free (100 container tests/mo); Team from $25/dev/mo; K8s needs Enterprise. Compare with StackRadar · Snyk Container website

3. Trivy Operator

Trivy Operator is the free, Apache-2.0 Kubernetes operator from Aqua Security that scans running workloads with Trivy and writes the results into the cluster as custom resources.

Best for: You run one or two clusters and mainly want to know what is vulnerable right now. Pricing: Free (Apache-2.0); you run and operate it. Compare with StackRadar · Trivy Operator website

4. Anchore Enterprise

Anchore Enterprise is an SBOM-centric SCA platform from the maintainers of Syft and Grype, focused on compliance-driven scanning of images in registries and CI, with an Anchore Score built from CVSS, EPSS and CISA KEV.

Best for: You need SBOM management for a compliance programme (FedRAMP, DoD, medical devices) more than cluster visibility. Pricing: Quote-only. Compare with StackRadar · Anchore Enterprise website

Should you switch?

Choose Docker Scout if

  • You want vulnerability feedback at build time, in Docker Desktop and CI.
  • You need base-image recommendations with layer-level detail.
  • Your images all live on Docker Hub and you already pay for Docker Team.
  • You do not need to know what is running in Kubernetes.

Choose StackRadar if

  • You need the runtime view: which running pods carry a given CVE, right now and last month.
  • Your clusters pull from several registries, not just Docker Hub.
  • You want Helm-release and ArgoCD context on every finding.
  • You want a per-cluster price instead of a per-seat one.

Frequently asked questions

Does Docker Scout scan Kubernetes clusters?

No. Docker Scout analyses images in registries and on the Docker Desktop host. It has no view of what is deployed in a Kubernetes cluster.

Should I use Docker Scout or StackRadar?

Both, if you can: they answer different questions. Scout tells you whether an image is vulnerable before you push it; StackRadar tells you which running workloads carry a vulnerability and keeps that answer current as new advisories land.

More alternatives pages