dosubot[bot] commented on issue #42754: URL: https://github.com/apache/superset/issues/42754#issuecomment-5179540794
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GUEST_TOKEN_JWT_SECRET = "your-strong-secret-here" # generate with: openssl rand -base64 42 GUEST_TOKEN_JWT_EXP_SECONDS = 300 # 5 min, SDK auto-refreshes GUEST_ROLE_NAME = "Public" # FAB role assigned to every guest user # CSP — allow your app domain to iframe Superset TALISMAN_ENABLED = True TALISMAN_CONFIG = { "content_security_policy": { "default-src": ["'self'"], "frame-ancestors": ["'self'", "https://your-app-domain.com";], "img-src": ["'self'", "blob:", "data:"], "worker-src": ["'self'", "blob:"], "connect-src": ["'self'"], "object-src": "'none'", "style-src": ["'self'", "'unsafe-inline'"], "script-src": ["'self'", "'strict-dynamic'"], }, "content_security_policy_nonce_in": ["script-src"], "force_https": False, # False if TLS is terminated by a reverse proxy "session_cookie_secure": True, } # Cross-origin cookie settings for embedding SESSION_COOKIE_SAMESITE = "None" SESSION_COOKIE_SECURE = True SESSION_COOKIE_HTTPONLY = True # If behind a reverse proxy ENABLE_PROXY_FIX = True ``` [[1]](https://app.dosu.dev/a28d3c7e-a9d3-459e-9fb6-3a6f9ff4f357/documents/3591f9fe-e5ac-49fc-95e4-b2f6cf8715f7) [[2]](https://app.dosu.dev/a28d3c7e-a9d3-459e-9fb6-3a6f9ff4f357/documents/4052ed7c-bff2-4282-807d-4a52f18d9976) **2. Enable embedding on the dashboard** In the Superset UI: open the dashboard → "…" menu → **Embed Dashboard** → add your allowed domains. This creates an `EmbeddedDashboard` record with a UUID. An empty domain list means any origin can embed [[3]](https://app.dosu.dev/a28d3c7e-a9d3-459e-9fb6-3a6f9ff4f357/documents/4052ed7c-bff2-4282-807d-4a52f18d9976). **3. Guest token payload structure** Your backend calls `POST /api/v1/security/guest_token/` with a valid admin/service-account bearer token [[4]](https://app.dosu.dev/a28d3c7e-a9d3-459e-9fb6-3a6f9ff4f357/documents/3591f9fe-e5ac-49fc-95e4-b2f6cf8715f7): ```json { "user": { "username": "guest_user", "first_name": "Guest", "last_name": "User" }, "resources": [{ "type": "dashboard", "id": "<embedded-dashboard-uuid>" }], "rls": [] } ``` The `resources.id` should be the **embedded UUID** (not the dashboard integer ID). The `user.username` should be **non-empty**. The response returns a `token` field containing the JWT. **4. Frontend SDK usage** ```bash npm install @superset-ui/embedded-sdk ``` ```javascript import { embedDashboard } from "@superset-ui/embedded-sdk"; embedDashboard({ id: "embedded-dashboard-uuid", // from the Embed Dashboard dialog supersetDomain: "https://superset.example.com";, mountPoint: document.getElementById("dashboard-container"), fetchGuestToken: () => fetch("/your-backend/guest-token") .then(r => r.json()) .then(d => d.token), dashboardUiConfig: { hideTitle: true, hideChartControls: true, // hides the "..." menu and edit controls on charts hideTab: false, }, }); ``` The `hideChartControls: true` option hides the chart-level "Edit chart" and "More options" ("…") menus — this is the setting you need to remove edit/admin UI [[5]](https://app.dosu.dev/a28d3c7e-a9d3-459e-9fb6-3a6f9ff4f357/documents/4052ed7c-bff2-4282-807d-4a52f18d9976). **5. Common causes of "Access denied" / blank iframe** - **Missing `can read on CurrentUserRestApi` permission on the guest role.** The embedded frontend calls `/api/v1/me/roles/` on load — if this returns 403, the iframe stays blank. Add this permission to your `GUEST_ROLE_NAME` role [[6]](https://github.com/apache/superset/discussions/42547#discussioncomment-17818209). - **Missing dataset-level permissions.** The guest role needs `datasource access` on every dataset used by the dashboard's charts, not just dashboard-level access. - **CORS errors on guest token call.** CORS only applies if your **browser** directly calls Superset's API. The guest token should be fetched by your **backend** (server-to-server), not the browser. The `fetchGuestToken` callback should call *your* backend, which then calls Superset. - **CSP `frame-ancestors` not set.** Without this, browsers block the iframe silently. - **`SESSION_COOKIE_SAMESITE` still at default `"Lax"`.** Cross-origin iframes need `"None"` + `Secure`. - **`Referer` header mismatch.** The `/embedded/<uuid>` route validates `Referer` against the `allowed_domains` list — a mismatch returns 403 [[7]](https://app.dosu.dev/a28d3c7e-a9d3-459e-9fb6-3a6f9ff4f357/documents/4052ed7c-bff2-4282-807d-4a52f18d9976). - **Using `?standalone=2` instead of the SDK.** The `standalone` param strips UI chrome but does *not* handle guest token auth. Use the embedded SDK for the guest token flow; `standalone` is for authenticated users only [[8]](https://app.dosu.dev/a28d3c7e-a9d3-459e-9fb6-3a6f9ff4f357/documents/4052ed7c-bff2-4282-807d-4a52f18d9976). Feel free to share your specific error logs and config — happy to help narrow down the exact issue you're hitting. <!-- Dosu Comment Footer --> *To reply, just mention [@dosu](<https://go.dosu.dev/dosubot?utm_source=github&utm_medium=bot-comment&utm_campaign=github-comment-footer-20260415&utm_content=reply-with-mention&utm_term=apache%2Fsuperset>).* --- Share context across your team and agents. Try [Dosu](https://dosu.dev?utm_source=github&utm_medium=bot-comment&utm_campaign=github-comment-footer-20260415&utm_content=knowledge-infrastructure-tagline&utm_term=apache%2Fsuperset). 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