CVE-2026-114139
Sentry-Javascript: Middleware Bypass when using Tunnel route
- State
- Published
- Severity
- 9.1 Critical
- Published
- Oct 21, 2026
- Updated
- Oct 28, 2026
- Reserved
- Oct 20, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.1 Critical | 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 | GitHub_M |
Weaknesses
- CWE-693 Protection Mechanism Failure
Affected Products
| Product | Versions |
|---|---|
sentry-javascriptgetsentry |
|
References
- https://github.com/getsentry/sentry-javascript/security/advisories/GHSA-mchm-gjx6-7h55
- https://github.com/getsentry/sentry-javascript/pull/24499
- https://github.com/getsentry/sentry-javascript/pull/24565
- https://github.com/getsentry/sentry-javascript/pull/24760
- https://github.com/getsentry/sentry-javascript/commit/878b685c85dc12045e47e1932c96f5381d7ac532
- https://github.com/getsentry/sentry-javascript/commit/c122aac4f29541eb6da494296822c91eab3cf5ae
- https://github.com/getsentry/sentry-javascript/commit/d525a2f6015b47384bc139c30d58e0d5435d52e5
- https://github.com/getsentry/sentry-javascript/releases/tag/10.75.2
- https://github.com/getsentry/sentry-javascript/releases/tag/11.0.0-rc.1
- https://github.com/getsentry/sentry-javascript/releases/tag/9.47.2
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