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Trivy Operator alternatives for Kubernetes vulnerability scanning

Most teams that search for a Trivy Operator alternative are not unhappy with the scanner — Trivy is excellent. They have hit the limits of the CRD model: reports that expire, no view across clusters, CVSS-only ranking, and security data living in etcd.

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

What Trivy Operator does well

Before the list: Trivy Operator is a good tool for the right team. 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.

  • Free, open source, and maintained by the company that maintains Trivy itself.
  • Nothing leaves the cluster — results are CRDs you read with kubectl.
  • Covers more than vulnerabilities: config audit, exposed secrets, RBAC assessment and compliance reports ship in the same operator.
  • Prometheus metrics out of the box, so a Grafana dashboard is quick to stand up.

Trivy Operator pricing

Trivy Operator is free and open source. The cost is operational: someone maintains the operator, tunes report TTLs and scan scopes to keep etcd healthy, and builds whatever aggregation, history and alerting the team needs on top of the CRDs. Aqua sells its commercial platform separately, quote-only.

Trivy Operator 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 Trivy Operator is stronger: you run one or two clusters and mainly want to know what is vulnerable right now. See StackRadar vs Trivy Operator for the full comparison.

2. Kubescape / ARMO Platform

Kubescape is a CNCF-incubating open-source Kubernetes security scanner; ARMO Platform is the commercial SaaS built on it, adding vulnerability management, eBPF runtime relevancy and, more recently, cloud detection and response.

Best for: You want misconfiguration, compliance and RBAC scanning in the same tool as vulnerabilities. Pricing: Quote-only (was ~$59/node/mo; free ≤10 nodes). Compare with StackRadar · Kubescape website

3. OWASP Dependency-Track

Dependency-Track is the OWASP open-source SBOM analysis platform: you send it CycloneDX SBOMs and it continuously re-evaluates them against vulnerability feeds, with EPSS support and KEV-aware policies.

Best for: You already produce CycloneDX SBOMs in CI and want a self-hosted place to track them. Pricing: Free (Apache-2.0); self-hosted operations cost. Compare with StackRadar · OWASP Dependency-Track website

4. Aqua Security Platform

Aqua Security is the enterprise container-security platform from the maintainers of Trivy, covering image scanning, Kubernetes security posture, runtime protection and supply-chain controls, sold to enterprises through sales.

Best for: You need runtime protection, admission control and enforcement, not just visibility. Pricing: Quote-only; free Trivy tooling separately. Compare with StackRadar · Aqua Security Platform website

Should you switch?

Choose Trivy Operator if

  • You run one or two clusters and mainly want to know what is vulnerable right now.
  • You have a hard rule that no data may leave the cluster — not even a dependency list.
  • You want config, secrets and RBAC checks in the same package.
  • Your team already lives in Grafana and the Prometheus metrics are enough.

Choose StackRadar if

  • You need one answer across every cluster, not one cluster at a time.
  • You need to answer “when did this first appear?” or “what were we exposed to in March?”
  • You want findings ranked by real-world exploitability (EPSS, KEV), not CVSS alone.
  • You need a dated paper trail for an auditor or an EU regulator (CRA, NIS2).

Frequently asked questions

Is Trivy Operator good enough on its own?

For a single cluster where you want a current snapshot of vulnerabilities and some config checks, yes — it is a genuinely good free answer. It stops being enough when you need history, a multi-cluster view, exploitability-based ranking or a record you can show an auditor.

Can I run Trivy Operator and StackRadar together?

Yes. The two do not conflict. Some teams keep Trivy Operator for config, secrets and RBAC checks inside each cluster and use StackRadar as the one place that tracks vulnerabilities across all of them over time.

Does Trivy Operator keep vulnerability history?

No. VulnerabilityReport objects have a TTL (24 hours by default), after which they are deleted and the workload is rescanned. Anything historical has to be exported and stored by you.

Does Trivy Operator use EPSS or CISA KEV?

Trivy Operator ranks by CVSS severity. EPSS exploitation probability and the CISA Known Exploited Vulnerabilities catalogue are not part of its reports, so a never-exploited 9.8 sorts above a 5.3 that is being exploited today.

More alternatives pages