The Spring OXM wrapper in Spring Framework before 3.2.4 and 4.0.0.M1, when using the JAXB marshaller, does not disable entity resolution, which allows context-dependent attackers to read arbitrary files, cause a denial of service, and conduct CSRF attacks via an XML external entity declaration in conjunction with an entity reference in a (1) DOMSource, (2) StAXSource, (3) SAXSource, or (4) StreamSource, aka an XML External Entity (XXE) issue.