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[ CVE-2026-114139 · Published 21 Oct 2026 ]

Sentry-Javascript: Middleware Bypass when using Tunnel route

CVSS 9.1 EPSS <1%Fix available

[ Why it matters ]Priority signals

  • Critical severity: CVSS 9.1

[ Description ]Official 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.

[ Fixes ]Fixes and patches

  • @sentry/nextjs 9.47.2Fixed version · GitHub Advisories · npm package @sentry/nextjs: upgrade to 9.47.2 or later (affected >= 9.36.0, < 9.47.2)
  • @sentry/nextjs 10.75.2Fixed version · GitHub Advisories · npm package @sentry/nextjs: upgrade to 10.75.2 or later (affected >= 10.0.0-alpha.0, < 10.75.2)
  • @sentry/nextjs 11.0.0-rc.1Fixed version · GitHub Advisories · npm package @sentry/nextjs: upgrade to 11.0.0-rc.1 or later (affected >= 11.0.0-alpha.0, < 11.0.0-rc.1)

[ Packages ]Affected open-source packages

  • @sentry/nextjs npmAffected >= 9.36.0, < 9.47.2 · fixed in 9.47.2 · GHSA-mchm-gjx6-7h55
  • @sentry/nextjs npmAffected >= 10.0.0-alpha.0, < 10.75.2 · fixed in 10.75.2 · GHSA-mchm-gjx6-7h55
  • @sentry/nextjs npmAffected >= 11.0.0-alpha.0, < 11.0.0-rc.1 · fixed in 11.0.0-rc.1 · GHSA-mchm-gjx6-7h55

[ References ]References