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Harden CI installs against supply-chain lifecycle hooks

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Affaan Mustafa 2026-05-15 17:09:19 -04:00 • committed by Affaan Mustafa
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10
docs/security/supply-chain-incident-response.md
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@ -126,8 +126,10 @@ If ECC or a maintainer machine installed a known-bad package version:
keys, and local `.npmrc` tokens;
- any MCP, plugin, or harness credentials available in environment variables
or user-scope config.
6. Purge GitHub Actions caches for affected repositories.
7. Reinstall from a clean environment with `npm ci --ignore-scripts` first.
6. Purge GitHub Actions dependency caches for affected repositories.
7. Reinstall from a clean environment with lifecycle scripts disabled first:
`npm ci --ignore-scripts`, `pnpm install --ignore-scripts`,
`yarn install --mode=skip-build`, or `bun install --ignore-scripts`.
8. Re-enable lifecycle scripts only after the dependency tree and package
versions are pinned to known-clean releases.
@ -136,7 +138,9 @@ If ECC or a maintainer machine installed a known-bad package version:
ECC enforces these rules through `scripts/ci/validate-workflow-security.js`:
- privileged workflows must not checkout untrusted PR refs;
- workflows with write permissions must use `npm ci --ignore-scripts`;
- all workflow dependency installs must disable lifecycle scripts;
- workflows must not restore or save shared GitHub Actions dependency caches
during active supply-chain hardening;
- workflows with `id-token: write` must not restore or save shared dependency
caches;
- workflows that run `npm audit` must also run `npm audit signatures`;