[dervoeti]

Description

Closes stackabletech/issues#913 and stackabletech/issues#914

Fixes two CVEs in the Apache Superset and Apache NiFi images:

• superset: Bump brotli to 1.2.1 to fix CVE-2026-111497, for 4.1.4 and 6.1.0 (only the constraints files change).
• nifi: Bump Hazelcast to 5.7.0 to fix CVE-2026-107726, for 2.6.0 and 2.9.0. This is a partial backport of NIFI-15942, only the Hazelcast version bump in nifi-hazelcast-services.

None of the breaking changes in the Hazelcast 5.6 and 5.7 release notes affect NiFi.

Testing

Superset 4.1.4 and 6.1.0 smoke test passed and brotli 1.2.1 is installed.

For NiFi I tested 2.6.0, smoke-latest passed, the NAR contains hazelcast-5.7.0.jar. An EmbeddedHazelcastCacheManager with "All Nodes" clustering enables fine and forms a 3 member Hazelcast 5.7.0 cluster.

Definition of Done Checklist

Note

Not all of these items are applicable to all PRs, the author should update this template to only leave the boxes in that are relevant.

Please make sure all these things are done and tick the boxes

• Changes are OpenShift compatible
• All added packages (via microdnf or otherwise) have a comment on why they are added
• Things not downloaded from Red Hat repositories should be mirrored in the Stackable repository and downloaded from there
• All packages should have (if available) signatures/hashes verified
• Add an entry to the CHANGELOG.md file
• Integration tests ran successfully

TIP: Running integration tests with a new product image

The image can be built and uploaded to the kind cluster with the following commands:

boil build <IMAGE> --image-version <RELEASE_VERSION> --strip-architecture --load
kind load docker-image <MANIFEST_URI> --name=<name-of-your-test-cluster>

See the output of boil to retrieve the image manifest URI for <MANIFEST_URI>.

[NickLarsenNZ]

LGTM