# GraphHopper — CWE-407 Scan Result: CLEAN

Scanned 2026-03-29. No new O(N²) list membership defects found.

Verified:
- `EdgeElevationInterpolator`: uses `GHBitSet` (bitset) for visitedEdgeIds — O(1)
- `RoadDensityCalculator`: uses `IntScatterSet` (hash set) for visited — O(1)
- `BreadthFirstSearch`: uses `GHBitSet` for visited — O(1)
- `MapMatching`: uses `IntHashSet` for chosenTransitionKeys — O(1)