        for (int i = 0; i < TO_PERCENT_ENCODED_CHARS.length; i++) {
            TO_PERCENT_ENCODED_CHARS[i] = String.format("%%%02X", i).toCharArray();
        }
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.