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.
References10
- github.com/getsentry/sentry-javascript/commit/878b685c85dc12045…
- github.com/getsentry/sentry-javascript/commit/c122aac4f29541eb6…
- github.com/getsentry/sentry-javascript/commit/d525a2f6015b47384…
- github.com/getsentry/sentry-javascript/pull/24499
- github.com/getsentry/sentry-javascript/pull/24565
- github.com/getsentry/sentry-javascript/pull/24760
- github.com/getsentry/sentry-javascript/releases/tag/10.75.2
- github.com/getsentry/sentry-javascript/releases/tag/11.0.0-rc.1
- github.com/getsentry/sentry-javascript/releases/tag/9.47.2
- github.com/getsentry/sentry-javascript/security/advisories/GHSA…
Metrics
- CVSS 4.0
-
9.1
CRITICAL
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 1% percentile: 44 · as of 8 November 2026
- CWE
- CWE-693
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.