	public function getModuleItemString() {
		$ret = $this->handler->_moduleName . '_' . $this->handler->_itemname;
		return $ret;
	}

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.