Sentry-Javascript: Middleware Bypass when using Tunnel route

{
  "id": "0d93387b900ab7bb237787d22325ddc88f20b7f3c8620066e090700070159312",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-114139",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Sentry-Javascript: Middleware Bypass when using Tunnel route",
    "summary": "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.",
    "evidence": "cve:CVE-2026-114139",
    "products": [
      {
        "name": {
          "value": "sentry-javascript",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-114139",
      "aliases": [
        "CVE-2026-114139"
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 9.1,
            "attackVector": "NETWORK",
            "baseSeverity": "CRITICAL",
            "vectorString": "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",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "privilegesRequired": "NONE",
            "subIntegrityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH"
          }
        }
      ],
      "affected": [
        {
          "vendor": "getsentry",
          "product": "sentry-javascript",
          "versions": [
            {
              "status": "affected",
              "version": ">= 9.36.0, < 9.47.2"
            },
            {
              "status": "affected",
              "version": ">= 10.0.0-alpha.0, < 10.75.2"
            },
            {
              "status": "affected",
              "version": ">= 11.0.0-alpha.0, < 11.0.0-rc.1"
            }
          ]
        }
      ],
      "modified": "2026-10-28T01:38:14.177Z",
      "provider": "cve",
      "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"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-114139",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-28T01:38:04.463446Z"
                  }
                }
              }
            ],
            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP",
              "dateUpdated": "2026-10-28T01:38:14.177Z"
            }
          }
        ],
        "cna": {
          "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
          "shortName": "GitHub_M",
          "dateUpdated": "2026-10-21T20:14:34.419Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-114139",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 406243,
  "published_at": "2026-10-21T20:14:34.419+00:00"
}