Add SHA256 digest support for Docker images#1
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christian-andersson merged 1 commit intomainfrom Jan 26, 2026
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Docker tags are NOT immutable - they can be moved to point to different images at any time. This creates a supply chain attack vector. Changes: - Add digest, secureReference, and securityNotes fields to VersionInfo - Add digest field to VersionDetail for list_versions output - Update Docker client to return SHA256 digests from Docker Hub API - Include security warnings explaining tag mutability risks - Document digest-pinned references in README security section The secureReference field provides ready-to-use digest-pinned format: nginx@sha256:1948e0c46da16a3565a844aa65ab848e1546f85cf47e47d044a567906a3a497f Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Summary
Docker tags can be moved to point to different images at any time, creating a supply chain attack vector. This PR adds digest support so users can pin to immutable references like
nginx@sha256:1948e0c46....Example Output
{ "packageName": "nginx", "registry": "docker", "latestStable": "1.27.3", "digest": "sha256:1948e0c46da16a3565a844aa65ab848e1546f85cf47e47d044a567906a3a497f", "secureReference": "nginx@sha256:1948e0c46da16a3565a844aa65ab848e1546f85cf47e47d044a567906a3a497f", "securityNotes": [ "WARNING: Docker tags are NOT immutable...", "Using the digest-pinned reference provides protection against tag tampering.", ... ] }Test plan
deno test --allow-net- all tests passlookup_versionfor Docker images returns digestlist_versionsfor Docker images returns digest per version🤖 Generated with Claude Code