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Critical · 9.1 CVE-2026-114139 EUVD-2026-107549GHSA-mchm-gjx6-7h55

Sentry-Javascript: Middleware Bypass when using Tunnel route

Published Oct 21, 2026 · Updated Oct 28, 2026 · Assigned by GitHub_M

Description

Sentry-Javascript is an official Sentry SDKs for JavaScript. From 9.36.0 until 9.47.2, 10.75.2, and 11.0.0-rc.1, the webpack integration for @sentry/nextjs skips application middleware for every request path under a configured tunnelRoute, while the tunnel rewrite serves only the exact tunnel path with valid o and p query parameters. When an application route directly collides with the tunnel path or a root dynamic segment resolves under it, an unauthenticated request can reach that route without middleware authorization. Exploitation requires tunnelRoute, a webpack build, a colliding route, and middleware being the only authorization control. This issue is fixed in versions 9.47.2, 10.75.2, and 11.0.0-rc.1.

Affected products

VendorProductAffectedFixed
getsentry sentry-javascript >= 9.36.0, < 9.47.2, >= 10.0.0-alpha.0, < 10.75.2, >= 11.0.0-alpha.0, < 11.0.0-rc.1 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Wolfi

ReleasePackageFixed inAdvisory
Wolfi rolling langfuse-3 +1 3.225.12-r5 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm @sentry/nextjs >= 9.36.0, < 9.47.2 9.47.2 GHSA-mchm-gjx6-7h55
npm @sentry/nextjs >= 10.0.0-alpha.0, < 10.75.2 10.75.2 GHSA-mchm-gjx6-7h55
npm @sentry/nextjs >= 11.0.0-alpha.0, < 11.0.0-rc.1 11.0.0-rc.1 GHSA-mchm-gjx6-7h55

References