HackerOne: IDOR in Report CSV export discloses the IDs of Custom Field Attributes of Programs

Specifying a report ID of another team when requesting a CSV export leaks the ID of the Custom Field Attribute in the CSV header. Request POST /reports/export HTTP/1.1 Host: localhost:8080 ... ----------868143055 Content-Disposition: form-data; name="reportids" 17 ----------868143055...