Security audit 2026-10-17, findings I4 and I5 (low), stage 5.
I4: every action is pinned by commit with its version in a comment - the
latest release of the major each used, so nothing changes in behaviour
(checkout v4.4.0, setup-go v5.6.0, setup-buildx-action v3.12.0,
build-push-action v6.19.2, login-action v3.7.0; commits read with git
ls-remote, the tags are lightweight). govulncheck v1.9.0 runs on the
source in test.yml, and in release.yml on the image's panel and
selfpost-backup binaries before the push (-mode=binary: the base image's
Go, which may lag the runner's - a fixed stdlib advisory then fails the
release until golang:1.26-trixie moves, which is the point). certbot is
pinned to v5.8.0 and Caddy to 2.11.7 (Docker Hub, 2026-10-17).
provenance/SBOM stay off until the GHCR cleanup keeps attestations, as the
plan says.
I5: published tags are never rebuilt, so a Debian security fix reaches
operators with the next release. The guide (§ Upgrading) and SECURITY.md
say so; base-packages.yml runs .github/scripts/base-packages.sh every
Monday: what debian:trixie-slim would install for postfix, libsasl2-2,
libsasl2-modules-db, sasl2-bin, openssl, libssl3t64, libdb5.3t64 against
the table in development.md (the 2.14.3 image's versions), red when one
moved. Tried on the test server: green as it stands, red with a version
changed.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
mixandClaude Opus 5.5
68493dc097