FKIE_CVE-2026-102989

Vulnerability from fkie_nvd - Published: 2026-10-13 17:17 - Updated: 2026-10-16 16:00
Severity
9.3 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Summary
TanStack Router is a client-first, server-capable, fully type-safe router and full-stack framework for the web. From 1.143.12 until 1.169.39 for @tanstack/start-server-core, 1.168.60 for @tanstack/react-start, 1.168.57 for @tanstack/solid-start, and 1.168.56 for @tanstack/vue-start, an unauthenticated attacker can place non-public fields in a server-function request payload so that attacker-controlled middleware state reaches the error path and a response-shaped object is accepted as an HTTP response. A crafted server-function URL can therefore return attacker-controlled HTML from the application's origin; when a visitor opens the URL, the injected script can access same-origin data and issue requests with the visitor's authority. This issue is fixed in @tanstack/start-server-core 1.169.39, @tanstack/react-start 1.168.60, @tanstack/solid-start 1.168.57, and @tanstack/vue-start 1.168.56.
References
security-advisories@github.comhttps://github.com/TanStack/router/commit/d521abd71c69f1ff010bb3def4d417cb5fa058cb
security-advisories@github.comhttps://github.com/TanStack/router/pull/8573
security-advisories@github.comhttps://github.com/TanStack/router/releases/tag/release-2026-09-30-1747
security-advisories@github.comhttps://github.com/TanStack/router/security/advisories/GHSA-qx66-fv34-fjm8
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "router",
          "vendor": "TanStack",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c release-2026-09-30-1747"
            }
          ]
        },
        {
          "product": "react-start",
          "vendor": "@tanstack",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.143.12, \u003c 1.168.60"
            }
          ]
        },
        {
          "product": "solid-start",
          "vendor": "@tanstack",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.143.12, \u003c 1.168.57"
            }
          ]
        },
        {
          "product": "start-server-core",
          "vendor": "@tanstack",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.143.12, \u003c 1.169.39"
            }
          ]
        },
        {
          "product": "vue-start",
          "vendor": "@tanstack",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.143.12, \u003c 1.168.56"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "TanStack Router is a client-first, server-capable, fully type-safe router and full-stack framework for the web. From 1.143.12 until 1.169.39 for @tanstack/start-server-core, 1.168.60 for @tanstack/react-start, 1.168.57 for @tanstack/solid-start, and 1.168.56 for @tanstack/vue-start, an unauthenticated attacker can place non-public fields in a server-function request payload so that attacker-controlled middleware state reaches the error path and a response-shaped object is accepted as an HTTP response. A crafted server-function URL can therefore return attacker-controlled HTML from the application\u0027s origin; when a visitor opens the URL, the injected script can access same-origin data and issue requests with the visitor\u0027s authority. This issue is fixed in @tanstack/start-server-core 1.169.39, @tanstack/react-start 1.168.60, @tanstack/solid-start 1.168.57, and @tanstack/vue-start 1.168.56."
    }
  ],
  "id": "CVE-2026-102989",
  "lastModified": "2026-10-16T16:00:33.533",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 9.3,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.8,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-102989",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-14T15:19:40.392223Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-10-13T17:17:14.797",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/TanStack/router/commit/d521abd71c69f1ff010bb3def4d417cb5fa058cb"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/TanStack/router/pull/8573"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/TanStack/router/releases/tag/release-2026-09-30-1747"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/TanStack/router/security/advisories/GHSA-qx66-fv34-fjm8"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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