def scriptPath(*pathSegs):
    startPath = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
    return os.path.join(startPath, *pathSegs)
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.