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CVE-2026-114139

Sentry-Javascript: Middleware Bypass when using Tunnel route

CVSS score

9.1

EPSS probability

—

Risk score

0.9

Published

2 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

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Vulnerability description

DayBreach AI Explanation

Verified against sources

CVE-2026-114139: Sentry-Javascript Middleware Bypass Vulnerability in Tunnel Route

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

The webpack integration for @sentry/nextjs in Sentry-Javascript skips application middleware for request paths under a configured tunnelRoute, allowing unauthenticated requests to reach protected application routes without authorization controls.

Why does it matter?

It matters because it allows unauthenticated attackers to bypass authorization controls and access protected application routes, potentially leading to critical confidentiality breaches.

What should be done?

  • Upgrade Sentry-Javascript to fixed versions
  • Follow vendor advisory guidance
  • Review route and tunnel configurations
Chain of evidence and sources3 verified claims

Sentry-Javascript @sentry/nextjs webpack entegrasyonu, tunnelRoute altındaki yollarda ara katman yazılımını atlamaktadır.

S0 · daybreach-canonicalS1 · cvelist

Kimliği doğrulanmamış bir istek, rota çakışması durumunda ara katman yazılımı yetkilendirmesi olmadan ilgili rotaya ulaşabilir.

S0 · daybreach-canonicalS1 · cvelist

İstismar süreci tunnelRoute, webpack derlemesi ve çakışan bir rota gerektirir.

S0 · daybreach-canonicalS1 · cvelist
Show the technical text from the sources

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 vector: 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

CWE: CWE-693

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-114139 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1getsentrysentry-javascript View
Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
9.1CVSS V4_0CRITICALCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:NCVE CNA
9.1CVSS V40CRITICALCVSS: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:XNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-114139 is associated with the following CWEs:

CWE-693: Common Weakness Enumeration Entry CWE-693

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-114139 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
UserGerekmiyor

Official Sources and Advisories

https://github.com/getsentry/sentry-javascript/security/advisories/GHSA-mchm-gjx6-7h55vendor-advisoryhttps://github.com/getsentry/sentry-javascript/pull/24499vendor-advisoryhttps://github.com/getsentry/sentry-javascript/pull/24565vendor-advisoryhttps://github.com/getsentry/sentry-javascript/pull/24760vendor-advisoryhttps://github.com/getsentry/sentry-javascript/commit/878b685c85dc12045e47e1932c96f5381d7ac532vendor-advisoryhttps://github.com/getsentry/sentry-javascript/commit/c122aac4f29541eb6da494296822c91eab3cf5aevendor-advisoryhttps://github.com/getsentry/sentry-javascript/commit/d525a2f6015b47384bc139c30d58e0d5435d52e5vendor-advisoryhttps://github.com/getsentry/sentry-javascript/releases/tag/10.75.2vendor-advisoryhttps://github.com/getsentry/sentry-javascript/releases/tag/11.0.0-rc.1vendor-advisoryhttps://github.com/getsentry/sentry-javascript/releases/tag/9.47.2vendor-advisory

CVSS Vector Radar Chart

9.1 / 10
Attack VectorNetworkComplexityLowPrivilegesNoneUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityNone

Vulnerability Scoring Details

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
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone required
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)None

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

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Weakness Type (CWE & CAPEC)

CWE-693

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CVE-2026-114139 · Sentry-Javascript: Middleware Bypass when…