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xmltextreader-dtd-entity-expansion-is-limited-to-10000000-characters.md

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XmlTextReader DTD entity expansion is limited to 10,000,000 characters

Scope

Edge

Version Introduced

4.5

Source Analyzer Status

Available

Change Description

DTD entity expansion is now limited to 10,000,000 characters. Loading XML files without DTD entity expansion or with limited DTD entity expansion is unaffected. Files with DTD entities that expand to more than 10,000,000 characters fail to load, and now throw an exception.

  • Quirked
  • Build-time break

Recommended Action

If the limit of DTD entity expansion is too low 10,000,000, the value can be overridden with the xref:System.Xml.XmlReaderSettings.MaxCharactersFromEntities property. An xref:System.Xml.XmlReaderSettings?displayProperty=name with the proper xref:System.Xml.XmlReaderSettings.MaxCharactersFromEntities?displayProperty=name value can be passed to XmlReader.Create that takes xref:System.Xml.XmlReaderSettings?displayProperty=name (ie. xref:System.Xml.XmlReader.Create(System.String,System.Xml.XmlReaderSettings))

Affected APIs

  • T:System.Xml.XmlTextReader
  • M:System.Xml.XmlTextReader.#ctor
  • M:System.Xml.XmlTextReader.#ctor(System.IO.Stream)
  • M:System.Xml.XmlTextReader.#ctor(System.IO.Stream,System.Xml.XmlNameTable)
  • M:System.Xml.XmlTextReader.#ctor(System.IO.Stream,System.Xml.XmlNodeType,System.Xml.XmlParserContext)
  • M:System.Xml.XmlTextReader.#ctor(System.IO.TextReader)
  • M:System.Xml.XmlTextReader.#ctor(System.IO.TextReader,System.Xml.XmlNameTable)
  • M:System.Xml.XmlTextReader.#ctor(System.String)
  • M:System.Xml.XmlTextReader.#ctor(System.String,System.IO.Stream)
  • M:System.Xml.XmlTextReader.#ctor(System.String,System.IO.Stream,System.Xml.XmlNameTable)
  • M:System.Xml.XmlTextReader.#ctor(System.String,System.IO.TextReader)
  • M:System.Xml.XmlTextReader.#ctor(System.String,System.IO.TextReader,System.Xml.XmlNameTable)
  • M:System.Xml.XmlTextReader.#ctor(System.String,System.Xml.XmlNameTable)
  • M:System.Xml.XmlTextReader.#ctor(System.String,System.Xml.XmlNodeType,System.Xml.XmlParserContext)
  • M:System.Xml.XmlTextReader.#ctor(System.Xml.XmlNameTable)

Category

XML, XSLT