void DateTimeChooserImpl::setValueAndClosePopup(int numValue, const String& stringValue)
{
    RefPtr<DateTimeChooserImpl> protector(this);
    if (numValue >= 0)
        setValue(stringValue);
    endChooser();
}

The product 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 product 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.