GitHub user dosubot[bot] added a comment to the discussion: 403 Forbidden on embedded dashboard in production (worked fine in test), missing can read on CurrentUserRestApi permission?
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Your production backend needs to: - First call `GET /api/v1/security/csrf_token/` to obtain a token - Include it as an `X-CSRFToken` header on the guest_token POST - **Crucially, reuse the same HTTP session** (cookies) across the login → csrf_token → guest_token calls. If your production HTTP client isn't maintaining a session/cookie jar across requests, the CSRF token won't match the server-side session and you'll get a 403. **2. `SESSION_COOKIE_SAMESITE` blocking cookies on cross-origin POSTs** The default is `SESSION_COOKIE_SAMESITE = "Lax"` [[2]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset/config.py#L1716), which means session cookies are **not sent** on cross-origin POST requests. If your production backend is on a different origin than Superset, the session cookie won't be included, authentication fails, and you get a 403. Locally this works because the calls are same-origin (localhost → localhost). If cross-origin is unavoidable: ```python SESSION_COOKIE_SAMESITE = "None" SESSION_COOKIE_SECURE = True # Required when SameSite=None ``` **3. CORS not enabled** CORS is disabled by default (`ENABLE_CORS = False`) [[3]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset/config.py#L830-L834). If your production backend makes browser-side or cross-origin requests to Superset, you may need: ```python ENABLE_CORS = True CORS_OPTIONS = { "origins": ["https://your-production-domain.com";], "supports_credentials": True } ``` That said, if your *backend server* (not the browser) is making the guest token call, CORS shouldn't apply — CORS is a browser enforcement mechanism. This matters more if you're fetching the token client-side. **4. Network/proxy layer** Since you mentioned identical credentials and the same Superset instance, also check: - Whether a reverse proxy or load balancer in front of Superset strips or modifies headers (e.g., `Cookie`, `X-CSRFToken`, `Referer`) - Whether `ENABLE_PROXY_FIX = True` is set — needed if Superset is behind a proxy so Flask reconstructs the correct scheme from `X-Forwarded-*` headers [[4]](https://app.dosu.dev/a28d3c7e-a9d3-459e-9fb6-3a6f9ff4f357/documents/3ed033fa-f2ff-41e2-850b-808a8b4f5abf) - Whether the production server can reach Superset's internal address at all (a quick `curl` to the login endpoint from the production server would confirm connectivity) **Quickest diagnostic step:** Run the exact sequence of calls from the production server using `curl` with `-v` (verbose) to see the full request/response headers. Look specifically at whether the session cookie is being returned on login, whether it's being sent back on the CSRF and guest_token calls, and what the 403 response body says. <!-- 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>).* --- Docs are dead. Just use [Dosu](https://dosu.dev?utm_source=github&utm_medium=bot-comment&utm_campaign=github-comment-footer-20260415&utm_content=static-docs-tagline&utm_term=apache%2Fsuperset). 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