Replace gosu with setpriv to eliminate Go stdlib CVEs and upgrade base deps to avoid further vulns#144
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tomakehurst merged 3 commits intomainfrom Mar 11, 2026
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gosu is a Go binary, so every Go stdlib CVE (e.g. CVE-2023-44487, CVE-2025-68121) gets flagged against it. Replace it with setpriv from util-linux, which is already present in Debian base images and provides the same privilege step-down functionality without the Go dependency. This also fixes the uid= option on nightly builds where gosu was never installed. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add apk upgrade to pull latest package versions, fixing 6 high-severity vulnerabilities (openssl, libpng, gnupg, expat) flagged by Snyk. Also removes su-exec which is no longer used since switching to setpriv. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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gosu is a Go binary, so every Go stdlib CVE (e.g. CVE-2023-44487, CVE-2025-68121) gets flagged against it. Replace it with setpriv from util-linux, which is already present in Debian base images and provides the same privilege step-down functionality without the Go dependency.
This also fixes the uid= option on nightly builds where gosu was never installed.
Additionally now upgrades dependencies from base images to reduce the likelihood of CVEs from them.
References
#137 (comment)