Vulnerability details
CVE-2026-114139
Sentry-Javascript: Middleware Bypass when using Tunnel route
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.1Critical | 4.0 | CVEProject cvelistV5 (CNA) (GitHub_M) | 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 |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| getsentry | sentry-javascript | >= 10.0.0-alpha.0, < 10.75.2 | CVEProject cvelistV5 (CNA) |
| getsentry | sentry-javascript | >= 11.0.0-alpha.0, < 11.0.0-rc.1 | CVEProject cvelistV5 (CNA) |
| getsentry | sentry-javascript | >= 9.36.0, < 9.47.2 | CVEProject cvelistV5 (CNA) |
References and advisories
10- https://github.com/getsentry/sentry-javascript/security/advisories/GHSA-mchm-gjx6-7h55 x_refsource_CONFIRM
- https://github.com/getsentry/sentry-javascript/pull/24499 x_refsource_MISC
- https://github.com/getsentry/sentry-javascript/pull/24565 x_refsource_MISC
- https://github.com/getsentry/sentry-javascript/pull/24760 x_refsource_MISC
- https://github.com/getsentry/sentry-javascript/commit/878b685c85dc12045e47e1932c96f5381d7ac532 x_refsource_MISC
- https://github.com/getsentry/sentry-javascript/commit/c122aac4f29541eb6da494296822c91eab3cf5ae x_refsource_MISC
- https://github.com/getsentry/sentry-javascript/commit/d525a2f6015b47384bc139c30d58e0d5435d52e5 x_refsource_MISC
- https://github.com/getsentry/sentry-javascript/releases/tag/10.75.2 x_refsource_MISC
- https://github.com/getsentry/sentry-javascript/releases/tag/11.0.0-rc.1 x_refsource_MISC
- https://github.com/getsentry/sentry-javascript/releases/tag/9.47.2 x_refsource_MISC
Details
- Published
- 2026-10-21
- Last updated
- 2026-10-28
- State
- Published
- Assigner (CNA)
- GitHub_M
- Kolun priority
- 25 · Low
Exploit prediction (EPSS)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-693Protection Mechanism Failure