Language: Java
Label: vulnerable
CWE: CWE-611 \u2014 Improper Restriction of XML External Entity Reference
The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.

Code:
	public static String serializeDocument(Document doc, boolean indent) throws IOException, TransformerException {
		ByteArrayOutputStream s = new ByteArrayOutputStream();
		TransformerFactory factory = TransformerFactory.newInstance();
		Transformer transformer = factory.newTransformer();
		transformer.setOutputProperty(OutputKeys.METHOD, "xml"); //$NON-NLS-1$
		transformer.setOutputProperty(OutputKeys.INDENT, indent ? "yes" : "no"); //$NON-NLS-1$ //$NON-NLS-2$
		DOMSource source = new DOMSource(doc);
		StreamResult outputTarget = new StreamResult(s);
		transformer.transform(source, outputTarget);
		return s.toString("UTF8"); //$NON-NLS-1$
	}