CVE-2026-40100

{
  "id": "CVE-2026-40100",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-10T17:17:12.997",
  "lastModified": "2026-10-26T21:10:00.170",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "FastGPT is an AI Agent building platform. Prior to 4.14.10.3, the /api/core/app/mcpTools/runTool endpoint accepts arbitrary URLs without authentication. The internal IP check in isInternalAddress() only blocks private IPs when CHECK_INTERNAL_IP=true, which is not the default. This allows unauthenticated attackers to perform SSRF against internal network resources. This vulnerability is fixed in 4.14.10.3."
    },
    {
      "lang": "es",
      "value": "FastGPT es una plataforma de creación de Agentes de IA. Anteriormente a la versión 4.14.10.3, el endpoint /API/core/app/mcpTools/runTool acepta URLs arbitrarias sin autenticación. La verificación de IP interna en isInternalAddress() solo bloquea IPs privadas cuando CHECK_INTERNAL_IP=true, lo cual no es la configuración predeterminada. Esto permite a atacantes no autenticados realizar SSRF contra recursos de red internos. Esta vulnerabilidad se corrigió en la versión 4.14.10.3."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "labring",
          "product": "FastGPT",
          "versions": [
            {
              "version": "< 4.14.10.3",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-15T14:45:56.717074Z",
          "id": "CVE-2026-40100",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:fastgpt:fastgpt:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "4.14.10.3",
              "matchCriteriaId": "2E93E71B-0D3A-4C6D-9679-EC1FA760E111"
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  "references": [
    {
      "url": "https://github.com/labring/FastGPT/security/advisories/GHSA-jrhc-f3j7-f8g4",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}