Vulnerability details

CVE-2026-114139

getsentry sentry-javascript

Sentry-Javascript: Middleware Bypass when using Tunnel route

CVSS 4.0
9.1Critical

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

ScoreVersionSourceVector
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

VendorProductVersionsSource
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
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Details

Published
2026-10-21
Last updated
2026-10-28
State
Published
Assigner (CNA)
GitHub_M
Kolun priority
25 · Low

Exploit prediction (EPSS)

0.51%
Probability of exploitation in 30 days
43.7%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
Yes
Exploitation
None
Technical impact
Total

Weaknesses (CWE)

  • CWE-693
    Protection Mechanism Failure