IDOR in Comment API Allows Cross-Process Comment Read and Write

The Comment API (GET /api/Comment and POST /api/Comment) in the affected application fails to perform authorization checks to verify that the requesting user has access to the object identified by the relatedObjectId. This Insecure Direct Object Reference (IDOR) vulnerability allows any authenticated user to read and write comments on any process across all business units by supplying an arbitrary object GUID.