ScanRook vs Grype
Grype is an open-source vulnerability scanner by Anchore that focuses on container images and filesystems, designed to work alongside Syft for SBOM generation.
This comparison is intended to be fair and factual. Both tools serve different use cases and have genuine strengths.
Feature comparison
| Feature | ScanRook | Grype |
|---|---|---|
| Vulnerability data sources | OSV, NVD, Red Hat OVAL, EPSS, CISA KEV | NVD, GitHub Advisory, Alpine, Amazon, Debian, Oracle, Red Hat, SUSE, Ubuntu, Wolfi |
| Container image scanning | Tar-based extraction with layer ordering | Image refs, tar files, OCI registries (via Syft) |
| Binary scanning (ELF/PE/Mach-O) | Full support via goblin with linked library extraction | Go binary detection, limited general binary analysis |
| ISO image scanning | Native ISO extraction and package detection | Not supported |
| SBOM import | CycloneDX, SPDX, Syft JSON with enrichment | Syft JSON, CycloneDX, SPDX (designed for Syft output) |
| SBOM diff | Component-level diff between SBOM snapshots | Not built-in (separate tooling required) |
| Confidence tiers | ConfirmedInstalled vs HeuristicUnverified | No confidence classification |
| Installed-state-first scanning | Reads actual package manager databases (RPM, APK, dpkg) | Uses Syft for package detection (file-based catalogers) |
| SBOM generation | Via integrated Syft (optional) | Via Syft (separate tool, tightly integrated) |
| Self-hosted deployment | CLI runs locally, Platform self-hostable (Enterprise) | Fully open-source, self-hosted by default |
| EPSS exploit prediction | Built-in for all findings | Not included |
| CISA KEV tagging | Automatic tagging of actively exploited CVEs | Not included |
| Cloud platform (dashboard, teams) | Web dashboard with SSE progress, org management | CLI only (Anchore Enterprise for UI) |
Benchmark results
Warm-cache runs on macOS (darwin/amd64). ScanRook 1.6.1, Grype 0.109.0. ScanRook includes EPSS and CISA KEV enrichment. Findings count reflects each tool's default detection approach.
| Image | Size | ScanRook | Grype |
|---|---|---|---|
| alpine:3.20 | 7.7 MB | 0.4s / 301 findings | 1.0s / 20 findings |
| debian:12 | 116 MB | 5.4s / 1110 findings | 1.1s / 117 findings |
| ubuntu:24.04 | 77 MB | 3.4s / 1365 findings | 1.0s / 47 findings |
| rockylinux:9 | 173 MB | 5.0s / 779 findings | 2.3s / 640 findings |
Why ScanRook reports more findings
ScanRook now reports more findings than both Trivy and Grype on every tested image except Rocky Linux (where it is close to Grype). This is because ScanRook v1.6.1 correctly maps binary package names to source package names for OSV queries, uses Alpine origin names, and leverages Red Hat OVAL + security data for unfixed CVEs. Every finding is verified against installed package databases with a confidence tier.
Where ScanRook stands out
Key areas where ScanRook takes a different approach.
Confidence tiers reduce false positive noise
ScanRook classifies every finding as ConfirmedInstalled or HeuristicUnverified based on how the package was detected. Packages read directly from RPM, APK, or dpkg databases get higher confidence than those detected via file path heuristics.
Integrated exploit prioritization
ScanRook enriches every finding with EPSS probability scores and CISA KEV status by default. This gives security teams an actionable prioritization signal beyond CVSS severity alone.
All-in-one platform with web dashboard
ScanRook includes a web platform for scan management, real-time progress tracking, and team collaboration. Grype is CLI-only (Anchore Enterprise provides a UI but is a separate commercial product).
Where Grype excels
Areas where Grype has strengths that ScanRook does not currently match.
- Tight integration with Syft for comprehensive SBOM generation.
- Well-established vulnerability database with broad distro-specific advisory coverage.
- Lightweight and fast with a focused scope.
- Fully open-source with no paid tier required for core functionality.
Summary
Grype is a focused, fast vulnerability scanner that pairs well with Syft. ScanRook provides confidence-tiered findings, built-in exploit prioritization, and an optional web platform. Choose Grype if you want a lightweight CLI that integrates tightly with Syft. Choose ScanRook if you need confidence classification, EPSS/KEV enrichment, and a web dashboard for team workflows.
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