Affected: WSO2 API Control Plane, WSO2 Universal Gateway, WSO2 Traffic Manager, WSO2 API Manager, WSO2 Carbon API Management Implementation, WSO2 Carbon API Manager Rest API Utility

The software fails to enforce role-based access controls for certain Gateway API invocations. Users with the 'Internal/Everyone' role can invoke these APIs, bypassing intended permission checks. This same vulnerability also affects Internal Service APIs, potentially exposing them in WSO2 APIM 3.x versions.

A malicious actor with a valid user account on a vulnerable deployment can perform sensitive operations against the Gateway REST API regardless of their actual roles or privileges. This could lead to unintended behavior or misuse, particularly in production environments.