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The XML 1.0 standard defines the structure of an XML document. The standard defines a concept called an entity , which is a term that refers to multiple types of data unit. One of those types of entities is an external general/parameter parsed entity, often shortened to external entity, that can access local or remote content via a declared ...
This article lists the character entity references that are valid in HTML and XML documents. A character entity reference refers to the content of a named entity. An entity declaration is created in XML, SGML and HTML documents (before HTML5) by using the <!ENTITY name "value"> syntax in a Document type definition (DTD).
An SQL injection takes advantage of SQL syntax to inject malicious commands that can read or modify a database or compromise the meaning of the original query. [13] For example, consider a web page that has two text fields which allow users to enter a username and a password.
As attribute nodes named "xmlns" or "xmlns:xxx", exactly as the namespaces are written in the source XML document. This is the model presented by DOM. As namespace declarations: distinguished from attributes, but corresponding one-to-one with the relevant attributes in the source XML document. This is the model presented by JDOM.
Code that uses this iterator can test the current item (to tell, for example, whether it is a start-tag or end-tag, or text), and inspect its attributes (local name, namespace, values of XML attributes, value of text, etc.), and can also move the iterator to the next item. The code can thus extract information from the document as it traverses it.
In the most frequently cited example, the first entity is the string "lol", hence the name "billion laughs". At the time this vulnerability was first reported, the computer memory used by a billion instances of the string "lol" would likely exceed that available to the process parsing the XML.
The qualified name of an element. It must conform to naming rules of XML objects. (i.e. must start with a letter or underscore, case-sensitive, cannot start with the letters xml(in any case), can contain letters, digits, hyphens, underscores, and periods, cannot contain spaces.) Expanded-QName The fully qualified name of an element.
Again the properties include the attribute name and target namespace. The attribute type constrains the values that the attribute may take. An attribute declaration may also include a default value or a fixed value (which is then the only value the attribute may take.) Simple and complex types. These are described in the following section ...