SvelteKit 2.10.0 before 3.0.0 Path Traversal via vite preview on Windows

{
  "id": "7921cfb799c726bfbbfa83a04049cb85edb432ec082afb976da893116a784efa",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-114063",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "SvelteKit 2.10.0 before 3.0.0 Path Traversal via vite preview on Windows",
    "summary": "SvelteKit (@sveltejs/kit) from 2.10.0 before 3.0.0 contains a path traversal vulnerability in the vite preview server on Windows that allows unauthenticated attackers to read files outside the prerendered output directory. Attackers who can reach the preview server through network access or a tunnel can send crafted requests to expose source code, configuration, or credentials readable by the server process.",
    "evidence": "cve:CVE-2026-114063",
    "products": [
      {
        "name": {
          "value": "kit",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-114063",
      "aliases": [
        "CVE-2026-114063"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV4_0": {
            "Safety": "NOT_DEFINED",
            "version": "4.0",
            "Recovery": "NOT_DEFINED",
            "baseScore": 8.7,
            "Automatable": "NOT_DEFINED",
            "attackVector": "NETWORK",
            "baseSeverity": "HIGH",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
            "exploitMaturity": "NOT_DEFINED",
            "providerUrgency": "NOT_DEFINED",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "privilegesRequired": "NONE",
            "subIntegrityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          }
        },
        {
          "format": "CVSS",
          "cvssV3_1": {
            "scope": "UNCHANGED",
            "version": "3.1",
            "baseScore": 7.5,
            "attackVector": "NETWORK",
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "integrityImpact": "NONE",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "availabilityImpact": "NONE",
            "privilegesRequired": "NONE",
            "confidentialityImpact": "HIGH"
          }
        }
      ],
      "affected": [
        {
          "vendor": "sveltejs",
          "product": "kit",
          "versions": [
            {
              "status": "affected",
              "version": "2.10.0",
              "lessThan": "3.0.0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "3.0.0",
              "versionType": "semver"
            }
          ],
          "packageURL": "pkg:npm/%40sveltejs/kit",
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-27T21:43:53.677Z",
      "provider": "cve",
      "references": [
        "https://github.com/sveltejs/kit/security/advisories/GHSA-xgrj-p7pg-6vm3",
        "https://www.vulncheck.com/advisories/sveltekit-2.10.0-before-3.0.0-path-traversal-via-vite-preview-on-windows"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-114063",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-27T21:43:39.114500Z"
                  }
                }
              }
            ],
            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP",
              "dateUpdated": "2026-10-27T21:43:53.677Z"
            }
          }
        ],
        "cna": {
          "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
          "shortName": "VulnCheck",
          "dateUpdated": "2026-10-21T00:36:36.847Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-114063",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 400602,
  "published_at": "2026-10-21T00:36:36.847+00:00"
}