	public static Object readObject(XStream xStream, InputStream is) {
		try(InputStreamReader isr = new InputStreamReader(is, ENCODING);) {
			return xStream.fromXML(isr);
		} catch (Exception e) {
			throw new OLATRuntimeException(XStreamHelper.class,
					"could not read Object from inputstream: " + is, e);
		}
	}
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.