Harden XML parsing via commons-secure-xml - #288
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Create XML parsers and transformers through org.apache.commons:commons-secure-xml. The secure factories enable FEATURE_SECURE_PROCESSING and install a non-removable entity-resolver floor on every parser they produce: external DTD, entity, schema and XInclude lookups that a caller-set resolver does not resolve are resolved to empty content instead of being fetched, and internal entity expansion is bounded, regardless of the JAXP implementation on the classpath. Changes: - Add the commons-secure-xml dependency (1.0.0-SNAPSHOT until its first release). - Route factory creation through SecureDocumentBuilderFactory in DOMParser and SecureTransformerFactory in XMLDocumentContainer; the caller-configurable factory settings (validation, namespace awareness, entity expansion, whitespace, comments, coalescing) keep working. - JDOMParser builds its SAX reader through the secure factory as well, by overriding SAXBuilder.createParser(); documents with internal DTD subsets parse as before. - Parsers registered through DocumentContainer.registerXMLParser remain under the control of their authors. - Run the CI and CodeQL builds with -Puse-apache-snapshots (inherited from the org.apache:apache parent POM) so the commons-secure-xml SNAPSHOT resolves; CodeQL's autobuild receives the profile through MAVEN_ARGS. Assisted-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MHgnMnGWHQoH2zD2jFdoMT
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Apache Commons Secure XML
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Creates XML parsers and transformers through
org.apache.commons:commons-secure-xml(1.0.0-SNAPSHOT until its first release). The secure factories enable XML secure processing and install a non-removable entity-resolver floor: external DTD, entity, schema and XInclude lookups that a caller-set resolver does not resolve are resolved to empty content instead of being fetched, and internal entity expansion is bounded.DOMParsergoes throughSecureDocumentBuilderFactoryandXMLDocumentContainerthroughSecureTransformerFactory; the caller-configurable settings (validation, namespace awareness, entity expansion, whitespace, comments, coalescing) keep working.JDOMParserbuilds its SAX reader through the secure factory as well, by overridingSAXBuilder.createParser(); documents with internal DTD subsets parse as before.DocumentContainer.registerXMLParserremain under the control of their authors.-Puse-apache-snapshotsso the SNAPSHOT dependency resolves.🤖 Generated with Claude Code