Affected: WSO2 API Manager, WSO2 Traffic Manager, WSO2 API Control Plane, WSO2 Universal Gateway, WSO2 Carbon API Management Implementation, WSO2 API Manager Publisher REST API V4, WSO2 Carbon API Management API

The System REST API accepts user-supplied file uploads without enforcing sufficient validation on the file type or destination, allowing files to be written to arbitrary server-accessible locations. Exploitation requires authenticated administrative access with publisher privileges.

Successful exploitation permits an authenticated publisher to upload files to server-accessible locations. Depending on the deployment environment and how uploaded files are handled, this could lead to the execution of uploaded content, potentially resulting in remote code execution.