Unsafe Defaults
Medium
- Category
- Tool Misuse
- Content
## Security & safety - **Public buckets are world-readable.** A bucket with `public: true` serves `GET`/`HEAD`/`LIST` to anyone who can reach the port — no auth at all. Only store data there that's meant to be openly readable; keep sensitive data in a `public: false` bucket. - **Bind loopback, not all interfaces.** The container listens on `8080`. Publishing it as `-p 8080:8080` / compose `"8080:8080"` makes it reachable from the network by default. Use `-p 127.0.0.1:8080:8080` (loopback) unless remote access is intentionally required, and for real deployments put the service on an internal Docker network behind a reverse proxy instead of exposing the port directly — see [references/setup.md](references/setup.md#quick-install) and [Behind a Reverse Proxy](references/setup.md#behind-a-reverse-proxy). - **`DELETE`, presigned `PUT`, and MCP `delete_object` are destructive & irreversible.** There's no undo, no versioning, no recycle bin — a deleted object (or one overwritten via `PUT`) is gone. An agent must NEVER call `DELETE` / `delete_object`, or generate/use a presigned `PUT` that overwrites, unless the user explicitly asked for that exact key to be removed or replaced; confirm the specific bucket + key first, never enumerate-then-bulk-delete, and treat bulk cleanup as requiring explicit per-object user confirmation. - **Bucket keys, master key, and presigned URLs are bearer credentials.** Whoever holds a bucket's private `key` or the `master_key` (or a live presigned URL) can act as that bucket/master until the credential is rotated or the URL expires — there's no per-caller revocation. Never paste these into shared prompts, logs, or presigned URLs handed to untrusted parties beyond the one object they're meant to grant.
- Confidence
- 89% confidence
- Finding
- The skill explicitly supports public buckets that are readable without authentication and notes deployment patterns that can expose the service on the network. While documented transparently, this creates a real risk of unintended data exposure if operators misclassify sensitive buckets as public or bind the service to reachable interfaces without additional access controls.