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test(security): cover IPv6 internal ranges + DNS-pinning fetch in host guard - #2202
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…t guard Part of the Round-2 audit swarm (plan 13); full details in the PR description. Co-authored-by: duyetbot <bot@duyet.net>
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Summary
Implements plan 13 from the Round-2 repo audit (
plans/13-*.md), executed by the overnight autonomous swarm.Two security-critical halves of the SSRF host guard had zero coverage: the IPv6 branch of
isInternalIp(ULA/link-local/IPv4-mapped/6to4) andcreateHostValidationFetch(the DNS-pinning fetch wrapper). Adds characterization tests asserting BLOCK for each internal IPv6 class and ALLOW for a public v6, plus the Workers hostname-guard throw and fetch-time internal-address rejection.host-url.tsunchanged (tests only).Test evidence
Verified on the combined swarm tree via the orchestrator's central CI-parity gate:
biome lint .→ clean (1914 files)tsc --noEmit(dashboard) → cleanbun test src/ --isolate→ 4692 pass / 0 fail (243 files, single process — no mock/env cross-contamination)The plan's real test is included and passes on this branch (it fails on
main).Self-review (runbook §5)
main, passes on this branchCHM_*/VITE_*env → OSS defaults).env*; no[vars]re-added towrangler.toml🤖 Part of the overnight audit swarm (one plan = one branch = one PR).
Co-Authored-By: duyetbot bot@duyet.net