https://edu.chainguard.dev/tags/libraries/Recent content in Libraries onHugo -- gohugo.ioen-USCopyright (c) 2023 ChainguardTue, 11 Aug 2026 00:00:00 +0000https://edu.chainguard.dev/chainguard/libraries/errors/Tue, 11 Aug 2026 00:00:00 +0000https://edu.chainguard.dev/chainguard/libraries/errors/<p>Chainguard Libraries applies security controls to every package it serves through the Chainguard Repository: malware and greyware scanning, and configurable policies such as a cooldown period. When one of these controls blocks a package or version, Chainguard withholds it and the install fails.</p> <p>Chainguard also surfaces errors for other reasons, such as a missing entitlement or invalid authentication.</p> <p><strong>Note</strong>: If your build tool or repository manager pulls from a public registry as a fallback, it may fetch a blocked package and bypass Chainguard&rsquo;s controls. Chainguard recommends pulling all open source packages through the <a href="https://edu.chainguard.dev/chainguard/libraries/overview/#upstream-fallback-and-controls">Chainguard Repository</a> only.</p>