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* feat(security): package legitimacy gate against slopsquatting (#2827) GSD's research → plan → execute pipeline had no install-time legitimacy gate: a hallucinated package name that passes `npm view` could flow all the way to `gsd-executor` running `npm install <malicious-pkg>` with no human checkpoint. This PR closes that gap. Changes: - gsd-phase-researcher: runs slopcheck on every recommended package; emits `## Package Legitimacy Audit` table; strips [SLOP] packages; ecosystem-specific verification (pip/npm/cargo); WebSearch-sourced packages tagged [ASSUMED]; ctx7 fallback uses `command -v` guard instead of `npx --yes` - gsd-planner: injects `checkpoint:human-verify` before [ASSUMED]/[SUS] installs; adds T-{phase}-SC STRIDE row to <threat_model> template; ctx7 fallback also uses `command -v` guard - gsd-executor: RULE 3 excludes package installs from auto-fix; failed installs surface as checkpoints, never silent substitutions - tests/package-legitimacy-gate.test.cjs: 24 structural assertions covering the full gate (node:test + node:assert, no raw .includes()) - docs: USER-GUIDE, COMMANDS, ARCHITECTURE updated with gate description - .changeset: Security fragment for v1.51 release notes Closes #2827 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * docs: expand Package Legitimacy Gate documentation Add full user-facing depth to the gate docs across USER-GUIDE, COMMANDS, and ARCHITECTURE: - USER-GUIDE: rewrite gate section with concrete RESEARCH.md/PLAN.md examples, slopcheck verdict table, [ASSUMED] WebSearch tagging explanation, slopcheck-unavailable troubleshooting, and graceful degradation behavior - COMMANDS.md: expand /gsd-plan-phase gate note with verdict bullets; add install-failure checkpoint behavior to /gsd-execute-phase - ARCHITECTURE.md: expand gate section with threat model rationale, layer table, claim provenance integration, ecosystem coverage, and graceful degradation semantics Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * fix(security): harden package legitimacy checkpoint semantics * fix(planner): satisfy size gates and tighten package gate wording --------- Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
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type, pr
| type | pr |
|---|---|
| Security | 3215 |
Package legitimacy gate added — GSD now runs slopcheck against every researcher-recommended package before it enters RESEARCH.md; slopsquatted ([SLOP]) packages are removed at the source and suspicious ([SUS]) or assumed ([ASSUMED]) packages force a checkpoint:human-verify task before the executor installs them. The npx --yes auto-download pattern is replaced with a command -v guard across all three agent files, and executor RULE 3 explicitly excludes package-manager installs from auto-fix scope.