	public boolean archiveNodeData(Locale locale, ICourse course, ArchiveOptions options,
			ZipOutputStream exportStream, String archivePath, String charset) {
		String filename = "checklist_"
				+ StringHelper.transformDisplayNameToFileSystemName(getShortName())
				+ "_" + Formatter.formatDatetimeFilesystemSave(new Date(System.currentTimeMillis()));
		filename = ZipUtil.concat(archivePath, filename);
		
		Checklist checklist = loadOrCreateChecklist(course.getCourseEnvironment().getCoursePropertyManager());
		String exportContent = XStreamHelper.createXStreamInstance().toXML(checklist);
		try {
			exportStream.putNextEntry(new ZipEntry(filename));
			IOUtils.write(exportContent, exportStream, "UTF-8");
			exportStream.closeEntry();
		} catch (IOException e) {
			log.error("", e);
		}
		return true;
	}
The software does not properly neutralize special elements that are used in XML, allowing attackers to modify the syntax, content, or commands of the XML before it is processed by an end system.