There are mainly two types of Prototype Pollution:
Local Prototype Pollution: This is more specific and involves manipulating the prototype of specific objects in the application. The impact is usually confined to the scope of those specific objects.
It's important to note that due to its nature, Prototype Pollution can lead to other kinds of attacks like:
Privilege escalation: By altering properties that control user privileges.
Remote Code Execution: By changing methods or properties related to function execution.
Denial of Service: By overloading methods or properties causing resource exhaustion.
Bypassing security measures: By altering validation or security checks.
For more details on Prototype Pollution see the relevant resources and child pages.