func Clean(p string) string {
	p = strings.ReplaceAll(p, `\`, "/")
	return strings.Trim(path.Clean("/"+p), "/")
}
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.