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Graph/client-controlled-success-state

AntiPattern

Untrusted Redirect State

client-controlled-success-state

Client-controlled redirect parameters and premature webhook timing can make payment success appear before verification, while attackers can spoof query strings or referers. Use verified webhook state, not success_url-derived params, to prevent false fulfillment and inconsistent UX.

Node Details

Public graph metadata

Updated6/27/2026

Connections

30 linked nodes

MATCHESSolution

Initialize auth state to an indeterminate value (e.g., `undefined`) and render/loading or avoid redirect until `fetchCurrentUser` completes. After the async auth check, set `user` to either a valid user or null so the route guard redirects only when authentication is confirmed.

MATCHESSolution

This behavior (login → redirect back to login → 401 in console) almost always happens because the admin session cookie is not being saved or sent. — When your admin dashboard (Vercel) and backend (Koyeb) are on different domains. Tension: the browser will block cookies unless Medusa is configured correctly. Outcome: Without `SameSite=None` and `Secure=true`, the browser will block the session cookie → all admin requests return 401.

MATCHESSolution

try separating your sign-in and sign-up pages — In addition to defining the path in env. Tension: This seems to have solved the redirects for me. Outcome: update the sign-in, sign-up paths in the dashboard.

MATCHESSolution

I added the below redirect URL to the Web Platform in the Api App registration. Tension: AADSTS9002325: Proof Key for Code Exchange is required for cross-origin authorization code redemption. Outcome: http://localhost:8000/docs.

MATCHESSolution

You can use the `redirect` option to keep the customer on the page when confirming the checkout — when confirming the checkout. Tension: This only works for payments that can happen entirely on your page. Outcome: const result = await checkout.confirm({ redirect: 'if_required' });.

MATCHESSolution

I'm using Stripe in my NextJS 14 application. Tension: I don't want to run this code from the thank you page I'm currently redirecting from. Outcome: I'm expecting to run some code after successful payment and only then redirect to return_url.

MATCHESSolution

Implement tracking script to your website — Redirect users back to your website from Stripe. Tension: Set up webhook in Stripe that triggers on checkout.session.completed event. Outcome: Connect Google Ads API with your Tracklution account.

MATCHESSolution

Checkout Session is designed to redirect users only when a payment is successful. — with Checkout Session. Tension: when a payment fails, the users stays on the same page to allow them to retry the payment. Outcome: This way, when a payment fails, the users stays on the same page to allow them to retry the payment.

MATCHESSolution

Configure the webhook route to use raw body handling (e.g., Express `express.raw({ type: 'application/json' })` in the Strapi webhook controller/route) and ensure the Stripe-Signature header is forwarded to the verifier so signature verification can use the unmodified raw payload.

MATCHESSolution

USE credit card number=4000 0035 6000 0008. — I had similar problem and am using django. Tension: I did not use any webhook.

MATCHESSolution

Handle each relevant webhook event separately according to Stripe’s documentation (including `checkout.session.async_payment_succeeded` if you use async payment methods) rather than assuming `checkout.session.completed` is a universal catch-all. Fix the switch logic by adding `break` (or restructuring cases) so `checkout.session.completed` does not fall through to the `checkout.session.async_payment_failed` logic.

MATCHESSolution

Handle both events in the webhook handler and make the processing idempotent/resilient (e.g., check the Subscription status and compare `previous_attributes`/relevant fields) so you only perform the intended “created” logic when appropriate, rather than assuming only `customer.subscription.created` will fire.

MATCHESSolution

you can confirm the Payment on the client-side — Stripe.js returns that error. Tension: If there is not, you can listen to wehbook events to handle post payment actions. Outcome: use Payment Elements.

MATCHESSolution

By enabling `recovery` in your Checkout Session, Stripe will generate a non-perishable link to that Session if the Session expires*. — You can listen for `checkout.session.expired` events with a webhook endpoint. Tension: You can listen for `checkout.session.expired` events with a webhook endpoint, then send this link to your customer. Outcome: use `recovery` and ema.

MATCHESSolution

implement a webhook to listen for and handle the `payment_intent.requires_action` event — Set up a webhook endpoint in your application to receive Stripe events. Tension: This event will inform you when additional actions are needed to complete the payment. Outcome: you can then redirect the customer to the relevant authentication flow.

MATCHESSolution

Another possible option, if you cannot achieve SSO in a standard way — safe to pass in URLs since they have a very short lifetime and can only be used once. Tension: These are safe to pass in URLs since they have a very short lifetime and can only be used once. Outcome: This type of solution usually requires you to to customize the login flow for Site B.

MATCHESSolution

Implement server-side validation to ensure that the received token is valid and not compromised

MATCHESSolution

HttpClient.GetAsync(new Uri(TextHelper.RedirectUrlNull(urlContent))); — We have an issue in our solution (we are using .net core). Tension: the SNYK vulnerabilities scaner show us that we have a Server-Side Request Forgery (SSRF) vulnerability.

MATCHESSolution

Add a dedicated route/action (e.g., /verify/request) that checks whether the user is still unverified and then regenerates and sends a new signed verification email via the email verifier service.

MATCHESSolution

Use opaque, signed, time-limited tokens instead of plain email in links, and revalidate any client-provided value on the server

MATCHESSolution

PKCE protects against a specific vulnerability. — if something can intercept the redirect. Tension: the `code` alone is useless because they need the `code_verifier`. Outcome: they need the `code_verifier` which lives in the app that originally initiated the `authorization_code` flow.

MATCHESSolution

Use ngrok’s `--verify-webhook` (and also verify the webhook signature/secret in the Flask app) to reject requests without the correct Shopify signing headers. Treat the endpoint as publicly reachable and enforce authentication/verification in your server.

MATCHESSolution

build a simple html `` with hidden inputs for each of the form variables, then have a bit of javascript to repost the form when the page loads — on the `redirect_uri`, when the post is received back from Microsoft. Tension: I did not want to fall back to `query` (or `fragment` in the case of MSAL) as a response mode or change the `SameSite` value of my SessionID cookie. Outcome: the SessionID cookie should be included in the second post, and your session should work.

MATCHESSolution

Use the documented `return_url` pattern where Stripe appends `payment_intent` and `payment_intent_client_secret` to the redirect URL; ensure the redirect page is served over TLS/HTTPS and do not log or expose the secret beyond the customer.

MATCHESSolution

If you believe your website was incorrectly flagged by Google's Phishing Detection — Google's Phishing Detection. Tension: incorrectly flagged. Outcome: request a review.

MATCHESSolution

Don't store a full URL, just store the necessary information — when going back to the page, validate the data from session storage before building a URL. Tension: not (for instance) a full URL. Outcome: validate the URL before using it.

MATCHESSolution

Resolve the conflict by handling redirection consistently in Cloudflare (and/or disabling the Apache redirect for the same purpose), then set Cloudflare SSL/TLS encryption to Full (Strict) so HTTPS upgrades and redirects complete without looping.

MATCHESSolution

Wget before 1.21.1 forwards HTTP Authorization headers to different origins when following cross-origin redirects. — when following cross-origin redirects. Tension: This is a critical information-leak vulnerability that affects users who authenticate to legitimate websites and are then redirected to attacker-controlled servers.

MATCHESSolution

Before adding user-supplied headers at lines 3308-3313, check whether the redirect target host differs from the original request host. Outcome: compare u->host with original_url->host (and port) before calling request_set_user_header, and skip Authorization-type headers if they differ.

MATCHESSolution

Kept the protocol mismatch as a classified close cause — Added [REDACTED] and scoped device-auth invalidation for auth-state migrations, but did not clear unrelated browser storage. Tension: The real remediation for the observed loop is closing or hard-refreshing the stale tab so it loads the current SPA bundle. Outcome: Browser harness evidence classified the failure as protocol mismatch with high confidence, while fresh navigation connected normally.

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