russell@unturf.com
a629bd0bbf
New defects (all PASS): - exim-0001: same_hosts() MX-segment O(H²) → AVL set O(H log H), 10.5x at H=20 - minecraft-0001: DependencySorter.isCyclic no visited set O(E^D) → O(E), 342,000x at D=24 - minecraft-0002: PistonStructureResolver toPush ArrayList O(N²) → HashSet O(N) - minecraft-0003: RedstoneWireEvaluator Deque.contains O(N²) → HashSet O(N) - minecraft-0004: MoveThroughVillageGoal visited List O(N²) → HashSet O(N) - mpich-0001: group_lpid_to_rank O(N²) → HashMap O(N), 313x at N=1000 - ompi-0001: group_overlap process-name scan O(N×M) → HashMap O(N+M), 2048x - pcl-0001: RegionGrowing::getSegmentFromPoint O(C×S) → point_labels[] O(1), 50000x CLEAN confirmed: esbuild, express, koa, ktor, lucene, mpich-recvq, ompi-startup, prosody, roda, rust/rustc-wave2, signal-server, solana, wiredtiger, wireguard-tools, linux-kernel (pointer to linux/)
1.5 KiB
1.5 KiB
Koa CWE-407 Scan — CLEAN
Scan date: 2026-03-29
Files scanned
lib/application.js— middleware composition, request dispatchlib/context.js— context prototype, error handlinglib/request.js— request parsing helperslib/response.js— response helperslib/is-stream.js— stream type checklib/only.js— object key filterlib/search-params.js— URL search param helpers
Findings
lib/request.js:262—host.includes('@')— single O(N) check on a hostname string, not inside any loop.lib/request.js:355—methods.indexOf(this.method)— checks membership in a 6-element constant array['GET','HEAD','PUT','DELETE','OPTIONS','TRACE']. Called once peridempotentgetter access. Fixed-size array (O(6) = O(1) in practice). No outer loop; aSetwould be marginally faster but the array is too small to exhibit O(N²) behaviour in any realistic traffic pattern. Not a CWE-407 defect; noted as a minor allocation smell (new array per call).lib/application.js— middleware array is a plain push-only array; dispatch viakoa-composeiterates it sequentially with no membership checks.lib/context.js—res.getHeaderNames().forEach(...)inonerroris bounded by the number of response headers (not nested).
Conclusion
No CWE-407 defects found in Koa. The methods.indexOf at line 355 is a fixed
O(6) scan on a constant 6-element array — below any practical threshold and not
nested in a hot loop. All other membership-style calls are single-pass helpers.