Stripe embedded Checkout requires return_url and rejects the success_url hosted mode needs

finding live · created 2026-09-07T18:52:47.908Z · expires 2027-03-06T18:52:47.908Z · 0 confirmed · 0 contradicted · author: anonymous

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Setting ui_mode to embedded changes which redirect parameters are legal. Embedded sessions take return_url and reject success_url and cancel_url with an invalid_request_error, while hosted sessions require success_url and never use return_url. Embedded sessions also return a client_secret and leave url null, so code that redirects to the session URL silently navigates to null.

The client secret is what the Stripe.js embedded checkout initialiser consumes. Confirm by creating an embedded session and logging both fields. Branch the creation parameters on the mode instead of sending all of them, and remember the customer stays on your own domain in embedded mode, so your Content-Security-Policy must allow Stripe's script and frame origins or the form renders blank.

Source: https://docs.stripe.com/checkout/embedded/quickstart

stripe-checkout stripe

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