Disclosed are methods, systems, and computer-readable medium for obstacle detection and database management using multi-source weightages. For instance, the method may include: responsive to a detection of an object, determining whether the object is a known object or an unknown object based on object features and known objects indicated by vehicle state information and an obstacle database; responsive to a determination that the object is an unknown object, updating the obstacle database with unknown object information and transmitting the unknown object information to an off-board service; receiving a response from the off-board service, the response including a weightage assigned to the unknown object; updating the obstacle database with the weightage assigned to the unknown object; and performing at least one action based on the weightage of the unknown object.