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Architecture + Security Audit (2026-02-28)

Scope

  • Full repository audit across auth, request pipeline, account rotation, storage, and dependency supply chain.
  • Severity focus: Critical, High, Medium.
  • Remediation PR policy: fix-in-place for findings above threshold.

Findings and Remediations

1) Dependency Vulnerabilities (High/Moderate)

  • Baseline npm audit reported 4 vulnerabilities (3 high, 1 moderate), including direct hono exposure plus transitive rollup, minimatch, and ajv.
  • Remediation: ran npm audit fix, updated lockfile graph, and verified npm audit reports zero vulnerabilities.

2) OAuth Loopback Host Mismatch (Medium)

  • OAuth redirect URI used localhost while callback listener binds to 127.0.0.1.
  • On environments where localhost resolves to non-IPv4 loopback, this can cause callback failures.
  • Remediation: aligned redirect URI to http://127.0.0.1:1455/auth/callback.

3) Hybrid Selection vs Token-Bucket Eligibility Mismatch (Medium)

  • Hybrid account selection and current-account fast path did not enforce token availability.
  • This could pick accounts that are locally token-depleted and trigger avoidable request failure behavior.
  • Remediation:
    • enforce token availability during current-account reuse and hybrid eligibility filtering;
    • continue account traversal when local token consumption fails to avoid premature loop exit.

4) OAuth Success-Page Single-Point Failure (Medium)

  • OAuth callback server loaded oauth-success.html synchronously at module import with no fallback.
  • If that asset was missing in a runtime package edge case, plugin startup could fail before auth flow execution.
  • Remediation:
    • add resilient loader with warning telemetry;
    • serve a built-in minimal success page when file load fails.
    • enforce waitForCode(state) contract by checking captured callback state before returning a code.

Verification

  • npm run lint pass
  • npm run typecheck pass
  • npm test pass
  • npm audit reports zero vulnerabilities

Notes

  • This audit focused on root-cause correctness and supply-chain risk reduction, while preserving existing plugin APIs and storage format compatibility.