FKIE_CVE-2026-44284

Vulnerability from fkie_nvd - Published: 2026-05-08 23:16 - Updated: 2026-05-12 16:40
Severity ?
6.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Summary
FastGPT is an AI Agent building platform. Prior to version 4.14.17, FastGPT had an inconsistent SSRF protection gap in MCP tool URL handling. The direct MCP preview/run endpoints already rejected internal/private network URLs, but the MCP tool create/update endpoints could still save an internal MCP server URL. That stored URL could later be used by workflow execution without revalidating the destination. An authenticated user with permission to create or manage MCP toolsets could store an internal endpoint such as http://localhost:3000/mcp and later cause the FastGPT backend workflow runner to connect to that internal destination. This issue has been patched in version 4.14.17.
References
security-advisories@github.comhttps://github.com/labring/FastGPT/commit/c1c6b9520d976d25ed945b5bc4e0768149e6db69
security-advisories@github.comhttps://github.com/labring/FastGPT/pull/6826
security-advisories@github.comhttps://github.com/labring/FastGPT/releases/tag/v4.14.17
security-advisories@github.comhttps://github.com/labring/FastGPT/security/advisories/GHSA-cxxj-99f7-f5wq
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/labring/FastGPT/pull/6826
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/labring/FastGPT/security/advisories/GHSA-cxxj-99f7-f5wq
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "FastGPT is an AI Agent building platform. Prior to version 4.14.17, FastGPT had an inconsistent SSRF protection gap in MCP tool URL handling. The direct MCP preview/run endpoints already rejected internal/private network URLs, but the MCP tool create/update endpoints could still save an internal MCP server URL. That stored URL could later be used by workflow execution without revalidating the destination. An authenticated user with permission to create or manage MCP toolsets could store an internal endpoint such as http://localhost:3000/mcp and later cause the FastGPT backend workflow runner to connect to that internal destination. This issue has been patched in version 4.14.17."
    }
  ],
  "id": "CVE-2026-44284",
  "lastModified": "2026-05-12T16:40:21.437",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 6.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-05-08T23:16:39.507",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/labring/FastGPT/commit/c1c6b9520d976d25ed945b5bc4e0768149e6db69"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/labring/FastGPT/pull/6826"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/labring/FastGPT/releases/tag/v4.14.17"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/labring/FastGPT/security/advisories/GHSA-cxxj-99f7-f5wq"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/labring/FastGPT/pull/6826"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/labring/FastGPT/security/advisories/GHSA-cxxj-99f7-f5wq"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}


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