CVE-2026-73284 RustFS: AddServiceAccount Handler Allows Creation of Root-Parent Service Accounts

RustFS is a distributed object storage system built in Rust. RustFS AddServiceAccount in rustfs/src/admin/handlers/serviceaccount.rs accepts an attacker-controlled targetuser after only checking CreateServiceAccountAdminAction, passes it to newserviceaccount, and prepareserviceaccountauth sets...