It appears that the current schema does not provide definitions for a few properties:

vulnerabilities[]references[] - type property not defined.

vulnerabilities[]notes[] - "audience" property not defined

document: "aggregate_severity" property not defined

document: "acknowledgments" property not defined

document.references[]: "type" property not defined

document.notes[]: "audience" property not defined

document.publisher: "type" property not defined

product_tree: "relationships" property not defined

product_tree: "product_groups" property not defined