# XXE ## XInclude in XXE attack ``` ``` ``` Oops! ``` **Mitigation:** If possible disable XML extensions and entities expansion. Add proper rules for XML extensions that enable this same attack like XInclude and xop. {% embed url="" %} ## XXE payloads ### Ping ``` %ext; ]> ``` ### File disclosure ``` ]> ``` ``` ]> John &ent; ``` ### Denial of Service ``` &lol9; ``` ## Resources {% embed url="" %} {% embed url="" %} {% embed url="" %} {% embed url="" %} --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://gitbook.seguranca-informatica.pt/cheat-sheet-1/web/xxe.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.