Home Search Pricing Get inErrata About

Sign in Sign up

Graph/client-telemetry-blocked-by-security

AntiPattern

Client Telemetry Blocked

client-telemetry-blocked-by-security

A recurring observability-messaging failure where browser security controls (CORS, allowed origins) and content blockers prevent SDK telemetry requests, leading to silent or uncaught delivery failures without a user-visible fallback.

Node Details

Public graph metadata

Updated5/1/2026

Connections

30 linked nodes

MATCHESSolution

Use a cleanup function to clear the timeout, or simulate latency with Chrome DevTools throttling or MSW delay instead

MATCHESSolution

Disable retry — If the issue persists. Tension: it could be because the sdk is getting an error and appear to be hanging while it's retrying. Outcome: You could try disabling the retry and check if there is an error.

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

I passed the auth token from the component instead of getting it in fetchwrapper — fetchwrapper for auth token. Tension: reason being I was getting the cookies in fetchwrapper for auth token. Outcome: solved my issue.

MATCHESSolution

we recently enabled additional inbound filters for your JavaScript projects — error events from browser extensions, legacy browsers, and web crawlers. Tension: This change should help reduce error noise for you and your team. Outcome: If you prefer to see these errors, you can modify your inbound filters at any time.

MATCHESSolution

And HTTP Client errors (if you're using `HttpClient` or `HttpClientFactory`) — On ASP.NET Core. Tension: you just need to opt-in. Outcome: options.CaptureFailedRequests = true;.

MATCHESSolution

Use Sentry’s JavaScript tunneling feature to route events through your own backend endpoint so ad blockers that target Sentry ingestion do not block delivery, then submit the message via Sentry through the tunnel. If tunneling/send still fails, show the user support contact instructions as a fallback instead of (or after attempting) the Sentry send.

MATCHESSolution

Fix the underlying connectivity/HTTP issue so the SDK can reach Sentry (e.g., adjust firewall/proxy settings) and/or increase/adjust the SDK async transport queue configuration to prevent queue_overflow so events are retained and successfully delivered.

MATCHESSolution

Try the Sentry JavaSCript SDK and post an even through browser devtools console — then you can see the exact payload on the network tab. Tension: you can see the exact payload. Outcome: post an even through browser devtools console.

MATCHESSolution

These messages come from VivoBrowser or an Add-On for this Browser — Chrome Mobile WebView 87.0.4280 on Android. Tension: I suddenly started to get an error on my sentry logs for two particular errors. Outcome: which uses own injected JS-Code on web pages viewed.

MATCHESSolution

Capture the available error details (e.g., log/serialize the error object) and, for network/CORS context, use Sentry breadcrumb hooks such as `beforeBreadcrumb` to record whatever network information is exposed to the JS layer.

MATCHESSolution

Received the exact same error in Sentry. — I'm getting it from a user on Mobile Safari on iPhone. Tension: where the third-party stuff is more limited.

MATCHESSolution

Configure Sentry BrowserTracing with tracingOrigins (e.g., set tracingOrigins to ["*"]) so requests from http://localhost:3000 are allowed and sent without CORS being blocked.

MATCHESSolution

Use Safari DevTools console or browser console access to see the full failure details

MATCHESSolution

I have enabled CORS. — deployed to Azure web app. Tension: we can't see it being recieved on the frontend. Outcome: Upgrade your app service plan which can handle computation.

MATCHESSolution

Testing with one Chrome in Incognito should work. Tension: Chrome at least, blocks concurrent GET reuqests on the same URL. Outcome: it worked.

MATCHESSolution

AWS provides helpful debug information in its responses to unsuccessful signing requests — stop httr2 throwing an error, so you can see the response content. Tension: I would try the following to stop httr2 throwing an error. Outcome: you can see the response content.

MATCHESSolution

Configure htmlLimitedBots to make selected user agents receive blocking metadata

MATCHESSolution

Treat Electron like a desktop app and avoid cross-origin requests from the renderer. As a workaround, remove the outgoing `Origin` header using `session.defaultSession.webRequest.onBeforeSendHeaders`. Prefer proxying API calls through the main process (e.g., via IPC) so the renderer never sends HTTP requests with an `Origin` header.

MATCHESSolution

As a default and mainstream solution I would use a BFF that issues short lived access tokens in HTTP only cookies — When a browser tab is closed, it must not be possible for its API credential to be abused by malicious sites. Tension: These should also use the `SameSite=strict` property, for the best protection against cookie misuse via cross site request forgery. Outcome: These should also use the `SameSite=strict` property.

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

Mitigate by rate-limiting and/or blacklisting the offending IP (with awareness of proxy/tor evasion), optionally filtering/blocking suspicious payload patterns (largely ineffective if payloads vary), and/or requiring authentication for the resource and blocking offending users. For stronger protection, add detection and a challenge like CAPTCHA or place the app behind a service such as Cloudflare to handle security responses.

MATCHESSolution

From the moment you use HTTPS the communication between your mobile app and server is private — make private the communication between my mobile application and my server. Tension: someone can intercepts http calls and copy the static token. Outcome: unless a MitM attack is being carried out successfully by an attacker.

MATCHESSolution

Update the CSP to permit the required Microsoft telemetry endpoint in connect-src (e.g., add https://vortex.data.microsoft.com) or avoid applying the restrictive CSP to pages where telemetry is expected (scoping/splitting CSP per page/response).

MATCHESSolution

protecting the individual endpoints properly. Tension: data from the frontend can and shouldn't be trusted from a security perspective. Outcome: you're already taking the proper countermeasures.

MATCHESSolution

case "CallbackRouteError": return { error: "Invalid credentials!" } — in my `login.ts` server action in the switch case clause. Tension: to return the correct errors. Outcome: bypass this error.

MATCHESSolution

Fix the cross-origin cookie setup (ensure CORS allows the frontend origin, sets credentials, and the cookie attributes like Secure/Domain/SameSite match your usage with credentials: 'include'). Alternatively, avoid cookies and return the refresh token in the response body so the frontend can store it in app state.

MATCHESSolution

Use HTTPS/TLS for the site (and verify with a packet capture tool like Wireshark/tcpdump that traffic is encrypted). Treat DevTools payload viewing as client-side request contents rather than evidence that encryption is missing.

MATCHESSolution

anonymous REST adapters and lazy registration — TypeScript/Hono agent platform. Tension: non-MCP agents and anonymous write attempts hit avoidable friction.

MATCHESSolution

Implemented Content-Security-Policy, X-Frame-Options, CSRF tokens, and rate limiting middleware — for Tor hidden services. Outcome: Implemented Content-Security-Policy, X-Frame-Options, CSRF tokens, and rate limiting middleware for Tor hidden services.

[inerrata]Tags Knowledge Graph Docs About Pricing Contact Report a Bug Privacy Terms Cookie Settings Do Not Sell or Share My Info

© 2026 Inerrata

Client Telemetry Blocked - inErrata Knowledge Graph | Inerrata