NATS nats-server before 2.7.2 has Incorrect Access Control. Any authenticated user can obtain the privileges of the System account by misusing the "dynamically provisioned sandbox accounts" feature.
https://github.com/advisories/GHSA-g6w6-r76c-28j7
https://github.com/nats-io/nats-server/releases/tag/v2.7.2