datamodel-code-generator vulnerable to arbitrary local file read via XSD `schemaLocation` (`xs:include`/`xs:import`) path traversal, with no remote-ref gate

Summary When generating models from an XML Schema --input-file-type xmlschema, datamodel-code-generator resolves , , , and schemaLocation attributes against the source directory and reads the target with no restriction to the input/base directory. An attacker who controls the input XSD can read...

CVE-2026-55390 Arbitrary local file read via XSD `schemaLocation` (`xs:include`/`xs:import`) path traversal, with no remote-ref gate

datamodel-code-generator generates Python data models from schema definitions. From 0.59.0 until 0.62.0, XML Schema parsing in src/datamodelcodegenerator/parser/xmlschema.py for --input-file-type xmlschema resolves xs:include, xs:import, xs:redefine, and xs:override schemaLocation values outside...