The V2SwapRouter contract performs direct arithmetic operations within array access indexes during token swap operations, which could potentially lead to out-of-bounds access or unexpected behavior.
The _v2Swap function performs direct arithmetic within array indices when accessing elements of the path array during token swaps. Specifically, when determining the next pair in the swap path, the code performs unchecked arithmetic operation i + 2 directly within the array access:
While there is a basic length check at the start of the function (if (path.length < 2) revert V2InvalidPath()), the subsequent array access using i + 2 occurs within an unchecked block and could potentially access elements beyond the array bounds.
The direct arithmetic operation within array access path[i + 2] in the swap routers core logic presents a potential security risk that should be addressed through proper index validation and bounds checking to ensure safe multi-hop swap execution.
