The Wire · Showcase
CONSUL-K8S PATCHES GRPC VULNERABILITY, PACKER FIXES HCL2 PLUGIN VARIABLE PASSING
By RepoJournal · Filed · About HashiCorp
Consul-K8s shipped critical dependency updates overnight addressing a gRPC vulnerability, while Packer fixed a template interpolation bug that broke HCL2 builds with user variables.
Consul-K8s upgraded Helm to v3.21.3 and patched two security vulnerabilities in transitive dependencies [1]. The most urgent: gRPC bumped from v1.80.0 to v1.82.1 to address GHSA-hrxh-6v49-42gf, plus oras-go updated to close GO-2026-5880 [1]. On the Packer side, HCL2 builds were silently failing when plugins tried to interpolate user variables with the `{{ user "name" }}` template function [2]. The fix passes `packer_user_variables` through to builder, provisioner, and post-processor plugins, matching the behavior of legacy JSON builds [2]. Docs got two updates: HVD (HashiCorp Validated Designs) migrated into the unified docs repository [3], and Terraform policy plugin build instructions clarified to ensure plugins compile for the correct OS and architecture [4]. A routine HCP Terraform changelog automation added 2 entries overnight [5].
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Action items
- → Upgrade consul-k8s to pick up gRPC and oras-go security patches hashicorp/consul-k8s [immediate]
- → Test Packer HCL2 builds using user variable interpolation before next release hashicorp/packer [plan]
- → Review updated Terraform policy plugin build docs for your build pipeline hashicorp/web-unified-docs [monitor]
References
- [1] Feature/binilvrgs/upgrade helm 3 21 3 ↗ hashicorp/consul-k8s
- [2] hcl2template: pass user variable values to plugins as packer_user_variables ↗ hashicorp/packer
- [3] Hvd docs migration ↗ hashicorp/web-unified-docs
- [4] Terraform policy: build plugins for correct OS/arch ↗ hashicorp/web-unified-docs
- [5] Update HCP Terraform changelog: 2026-08-06 ↗ hashicorp/web-unified-docs