Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
hoolock is a suite of lightweight utilities designed to maintain a small footprint when bundled. Starting in version 2.0.0 and prior to version 2.2.1, utility functions related to object paths (get, set, and update) does not block attempts to access or alter object prototypes. Starting in version 2.2.1, the get, set and update functions throw a TypeError when a user attempts to access or alter inherited properties.