glas-harness asked for a scanned immutable image. The scan ran, and it failed
on the base we had sanctioned, so no image was pushed.
Every finding is inherited from the base image or its distro packages; none is
in approval_engine code. Two fixes applied here:
The base pin was stale. It named a Debian 13.5 build of python:3.12-slim while
upstream is 13.6. Bumping the digest removes 30 HIGH and 47 MEDIUM on its own.
Still a digest, not a floating tag.
pip is gone from the runtime image. All 10 MEDIUM Python findings were in pip
itself, a build-time tool with no business in a running approval service. The
build is now two-stage, and pip is removed from both the venv and the base's
/usr/local, so command -v pip returns nothing.
What remains is a decision rather than a task. Three CRITICALs persist on
Debian, all perl-base (CVE-2026-13221, CVE-2026-42496, CVE-2026-8376), none
with an upstream fix, in a package this service never invokes and that Debian
marks Essential. An Alpine variant carries no perl and scans 0 CRITICAL / 7
HIGH / 1 MEDIUM against Debian's 3 / 51 / 56.
Alpine is proven viable rather than asserted: musl wheels resolve with no
toolchain, the full suite passes on musl at 111 tests, and non-root uid 10001,
schema v3, tenant:platform, fresh-store migrate/verify and both production
fail-closed gates all hold in the built image. It is parked in
Containerfile.alpine as a candidate; Containerfile remains sanctioned.
Nothing was released. Pushing the Debian variant would pin three unfixable
CRITICALs into a release digest, and choosing the runtime C library for this
service is not a call to make silently. The manifest still carries
REPLACE_WITH_RELEASE_DIGEST. Full record in docs/image-scan-2026-09-06.md.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PM5HnEAhokxdfcPqBNpT7D
Assistant: claude-code
Assistant-Model: opus
Assistant-Process: 715850@bnt-lap001
Assistant-Session: eb557e93-7cb1-45d0-9e57-7d15b3edc60e
tegwick
f88a92fb37