Uncontrolled Resource Consumption
deeply is vulnerable to Prototype Pollution in versions before 3.1.0. The function assign-deep could be tricked into adding or modifying properties of Object.prototype using using a _proto_ payload.
CWE-400 - Uncontrolled resource consumption
An uncontrolled resource allocation attack (also known as resource exhaustion attack) triggers unauthorized overconsumption of the limited resources in an application, such as memory, file system storage, database connection pool entries, and CPU. This may lead to denial of service for valid users and degradation of the application's functionality as well as that of the host operating system.