XML Injection (aka Blind XPath Injection)

Summary

XML external entity injection(XXE) is a vulnerability that allows an attacker to interfere with an application's processing of XML data. This attack occurs when XML input containing a reference to an external entity is processed by a weakly configured XML parser. The software 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. Here, XML external entity injection lead to External Service interaction & Internal file read in Business Central and also Kie-Server APIs.