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QuenchWorks

unbound

Image · Coordination · standard · v1.26.2

A+cosign signedSPDX SBOMSLSA provenanceamd64 · arm64Rebuilt 2026-10-22

Unbound, the validating, recursive, caching DNS resolver from NLnet Labs. Built from source with libevent, expat and dnscrypt; a nonroot config on port 5053 with DNSSEC validation and answers for private ranges only.

Current digest (deployed by the chart)

sha256:241af0530f6316bcc2329c22e25fdc042d0801bd02d9f96ed1bba4f04c511f4f

Signatures, the SBOM, and provenance all attach to this digest. Pin to it for reproducible, tamper-evident pulls.

Image
ghcr.io/quenchworks/images/unbound:1.26.2
Signed
cosign keyless
SBOM
SPDX, on digest
Provenance
SLSA build
Architectures
amd64, arm64
Runs as
nonroot (uid 1001)
Root filesystem
read-only
Image size
16.5 MB

Published versions

1 tag

Each tag is a multi-arch index (amd64 + arm64) pinned by digest. Tagged by version, never :latest.

VersionSizePublishedDigest
1.26.2latest16.5 MB2026-10-22sha256:241af0530f63…

Security report (Trivy)

A+· 100/1000 fixable CVEs
0
Critical
0
High
0
Medium
0
Low
0
Unknown
fixable per nightly scan · peak 122 of 115 days with any · 2026-06-29 to 2026-10-22

Pull the image

Run it directly with Docker, Podman, or any Kubernetes workload. Nonroot, read-only root filesystem, built for amd64 and arm64.

Pull (tag)

docker pull ghcr.io/quenchworks/images/unbound:1.26.2

Pinned by digest (recommended)

docker pull ghcr.io/quenchworks/images/unbound@sha256:241af0530f6316bcc2329c22e25fdc042d0801bd02d9f96ed1bba4f04c511f4f

Tags

1.26.21.26.2-amd641.26.2-arm64

Images are tagged by app version (never :latest): a multi-arch index plus per-arch tags.

App version
1.26.2
Architectures
amd64, arm64
Runs as
nonroot (uid 1001)
Root filesystem
read-only
License
BSD-3-Clause

Verify the supply chain

This image is cosign-signed and carries an SPDX SBOM and a SLSA build-provenance attestation on the same digest. Check all three yourself:

# 1. signature — built and signed by QuenchWorks CI
cosign verify ghcr.io/quenchworks/images/unbound:1.26.2 \
  --certificate-identity-regexp 'https://github.com/quenchworks/.+' \
  --certificate-oidc-issuer https://token.actions.githubusercontent.com

# 2. SLSA build provenance — which workflow built it, from what
cosign verify-attestation --type https://slsa.dev/provenance/v1 ghcr.io/quenchworks/images/unbound:1.26.2 \
  --certificate-identity-regexp 'https://github.com/quenchworks/.+' \
  --certificate-oidc-issuer https://token.actions.githubusercontent.com

# 3. SPDX SBOM — the package inventory
cosign verify-attestation --type https://spdx.dev/Document/v2.3 ghcr.io/quenchworks/images/unbound:1.26.2 \
  --certificate-identity-regexp 'https://github.com/quenchworks/.+' \
  --certificate-oidc-issuer https://token.actions.githubusercontent.com

See the SBOM & provenance guide for reading the SBOM and using these checks in CI.

Transparency

Every image carries its SBOM and provenance as attestations on the same digest, publicly verifiable with the commands above (they check the package and the Sigstore transparency log, Rekor).

View the Helm chartView package

Upstream project: https://nlnetlabs.nl/projects/unbound/