Tekton Chains release v0.26.1

-Docs @ v0.26.1
-Examples @ v0.26.1

Installation one-liner

kubectl apply -f https://infra.tekton.dev/tekton-releases/chains/previous/v0.26.1/release.yaml

Attestation

The Rekor UUID for this release is 108e9186e8c5677ae62945dea4e9789dbebdfee12e3cc85ee1f12ee9e6cb367731fa4e446af03670

Obtain the attestation:

REKOR_UUID=108e9186e8c5677ae62945dea4e9789dbebdfee12e3cc85ee1f12ee9e6cb367731fa4e446af03670
rekor-cli get --uuid $REKOR_UUID --format json | jq -r .Attestation | jq .

Verify that all container images in the attestation are in the release file:

RELEASE_FILE=https://infra.tekton.dev/tekton-releases/chains/previous/v0.26.1/release.yaml
REKOR_UUID=108e9186e8c5677ae62945dea4e9789dbebdfee12e3cc85ee1f12ee9e6cb367731fa4e446af03670

# Obtains the list of images with sha from the attestation
REKOR_ATTESTATION_IMAGES=$(rekor-cli get --uuid "$REKOR_UUID" --format json | jq -r .Attestation | jq -r '.subject[]|.name + ":v0.26.1@sha256:" + .digest.sha256')

# Download the release file
curl -L "$RELEASE_FILE" > release.yaml

# For each image in the attestation, match it to the release file
for image in $REKOR_ATTESTATION_IMAGES; do
  printf $image; grep -q $image release.yaml && echo " ===> ok" || echo " ===> no match";
done

Changes

Fixes

• 🐛 fix: upgrade cosign 2.6.0 to 2.6.2 (#1537) to address CVE's CVE-2025-66564, CVE-2025-66506