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fix(frontend): Filter out browser extension errors from Sentry SDK #121992

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fix(frontend): Filter out browser extension errors from Sentry SDK #121992

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16 changes: 16 additions & 0 deletions static/app/constants/sdk.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,22 @@ export const IGNORED_SPAN_NAMES = ['amplitude.com', 'pendo.io', 'reload.getsentr
// pollute our breadcrumbs since they may occur a LOT.
//
// XXX(epurkhiser): Note some of these hosts may only apply to sentry.io.
/**
* Deny errors originating from browser extensions. These are third-party
* scripts injected into Sentry pages and are not actionable by us.
* See: https://docs.sentry.io/platforms/javascript/configuration/filtering/#decluttering-sentry
*/
export const IGNORED_ERROR_DENY_URLS = [
// Chrome and generic extension paths (e.g. /extensions/google/setup/)
/extensions\//i,
// Chrome extension protocol
/^chrome-extension:\/\//i,
// Firefox extension protocol
/^moz-extension:\/\//i,
// Safari extension protocol
/^safari-extension:\/\//i,
];

export const SPA_MODE_ALLOW_URLS = [
'localhost',
'dev.getsentry.net',
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2 changes: 2 additions & 0 deletions static/app/serviceWorker/worker/initializeSentry.ts
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Expand Up @@ -3,6 +3,7 @@ import type {Breadcrumb} from '@sentry/browser';

import {
IGNORED_BREADCRUMB_FETCH_HOSTS,
IGNORED_ERROR_DENY_URLS,
IGNORED_SPAN_NAMES,
SENTRY_RELEASE_VERSION,
SPA_DSN,
Expand Down Expand Up @@ -36,6 +37,7 @@ export function initializeSentry({
isInitialized = true;
Sentry.init({
allowUrls: SPA_DSN ? SPA_MODE_ALLOW_URLS : sentryConfig.allowUrls,
denyUrls: IGNORED_ERROR_DENY_URLS,

@cursor cursor Bot Aug 13, 2026

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Filter wired to wrong SDK

Medium Severity

IGNORED_ERROR_DENY_URLS is only passed into the service worker Sentry.init, but the extension TypeError comes from scripts injected into the page and is captured by initializeSdk. The worker also sets defaultIntegrations: false without adding the event/inbound filters integration, so denyUrls does not run there either. The new filter never drops the targeted events.

Additional Locations (1)
Fix in Cursor Fix in Web

Reviewed by Cursor Bugbot for commit bacb7d6. Configure here.

dsn: SPA_DSN || dsn,
release: SENTRY_RELEASE_VERSION ?? sentryConfig.release,
environment: sentryConfig.environment,
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