Scans container images, Infrastructure-as-Code (Terraform, CloudFormation, Kubernetes manifests, Dockerfile, Helm), filesystems, git repos, and SBOMs with Trivy's vuln, misconfig, secret, and license scanners. Use when building a CI/CD security gate that scans images before push, IaC before apply, or SBOMs for supply-chain weaknesses, and fails the build on policy violations.
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Scans container images, Infrastructure-as-Code (Terraform, CloudFormation, Kubernetes manifests, Dockerfile, Helm), filesystems, git repos, and SBOMs with Trivy's vuln, misconfig, secret, and license scanners. Use when building a CI/CD security gate that scans images before push, IaC before apply, or SBOMs for supply-chain weaknesses, and fails the build on policy violations.
Trivy (by Aqua Security) is a comprehensive, open-source security scanner that finds vulnerabilities (CVEs), misconfigurations (IaC), secrets, software licenses, and software supply-chain weaknesses across a wide range of targets: container images, filesystems, Git repositories, virtual machine images, Kubernetes clusters, and SBOM documents. It is widely adopted as a "shift-left" gate in CI/CD pipelines because it is fast, runs as a single static binary, requires no agent, and supports machine-readable output formats (JSON, SARIF, CycloneDX, SPDX) for integration with code-scanning dashboards.
Trivy bundles four primary scanners that can be toggled with --scanners:
vuln — OS package and language-dependency vulnerability detection (CVE matching against the Trivy vulnerability DB).
misconfig — Infrastructure-as-Code and configuration misconfiguration detection (Terraform, CloudFormation, Kubernetes manifests, Dockerfile, Helm) using built-in and custom Rego policies.
license — Software license identification and policy enforcement.
This skill covers building a Trivy-based scanning workflow that gates a CI/CD pipeline: scanning images before push, scanning IaC before apply, generating and re-scanning SBOMs, and failing builds on policy violations. Detecting these weaknesses defends against the MITRE ATT&CK technique T1525 (Implant Internal Image), where adversaries plant malicious or vulnerable images in a registry to be deployed across the environment.
When to Use
When integrating vulnerability and misconfiguration scanning into a CI/CD pipeline as a quality/security gate before images are pushed or infrastructure is applied.
When auditing container images in a registry for known CVEs prior to deployment.
When validating Terraform, CloudFormation, Kubernetes, Dockerfile, or Helm IaC for security misconfigurations.
When generating an SBOM (CycloneDX/SPDX) for supply-chain transparency and later re-scanning that SBOM for newly disclosed CVEs.
When scanning a running Kubernetes cluster for vulnerable workloads and misconfigured RBAC/resources.
When enforcing license compliance policy on dependencies.
Prerequisites
A Linux/macOS/Windows host or CI runner with network access to download the Trivy vulnerability database.
Docker (optional) if scanning local images by name or using the containerized Trivy.
Produce a CycloneDX SBOM from an image, then scan the SBOM itself for vulnerabilities (so a stored SBOM can be re-evaluated as new CVEs are disclosed):
Use --exit-code 1 so the pipeline step fails when findings at or above the chosen severity are present. Separate the "report everything" run (exit 0) from the "enforce" run (exit 1):
