FKIE_CVE-2026-49257

Vulnerability from fkie_nvd - Published: 2026-06-18 21:16 - Updated: 2026-06-23 16:06
Severity
10.0 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Summary
mcp-pinot is a Python-based Model Context Protocol (MCP) server for interacting with Apache Pinot. In versions 3.0.1 and below, mcp-pinot defaults to running an HTTP MCP server bound to 0.0.0.0:8080 with no authentication enabled. All MCP tools, including SQL query execution, schema creation, and table-config mutation, are reachable by any network-adjacent caller. The server proxies these calls using server-side Pinot credentials, producing a confused-deputy condition that yields full read/write access to the configured Pinot cluster. This issue has been fixed in version 3.1.0
References
security-advisories@github.comhttps://github.com/startreedata/mcp-pinot/commit/1c7d3f9cd384854bf72c127d230bdb32299475ad
security-advisories@github.comhttps://github.com/startreedata/mcp-pinot/issues/90
security-advisories@github.comhttps://github.com/startreedata/mcp-pinot/pull/95
security-advisories@github.comhttps://github.com/startreedata/mcp-pinot/security/advisories/GHSA-73cv-556c-w3g6
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/startreedata/mcp-pinot/security/advisories/GHSA-73cv-556c-w3g6
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "mcp-pinot",
          "vendor": "startreedata",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.1.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "mcp-pinot is a Python-based Model Context Protocol (MCP) server for interacting with Apache Pinot. In versions 3.0.1 and below, mcp-pinot defaults to running an HTTP MCP server bound to 0.0.0.0:8080 with no authentication enabled. All MCP tools, including SQL query execution, schema creation, and table-config mutation, are reachable by any network-adjacent caller. The server proxies these calls using server-side Pinot credentials, producing a confused-deputy condition that yields full read/write access to the configured Pinot cluster. This issue has been fixed in version 3.1.0"
    }
  ],
  "id": "CVE-2026-49257",
  "lastModified": "2026-06-23T16:06:25.397",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 10.0,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 6.0,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-49257",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-22T18:08:14.343515Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-18T21:16:29.780",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/startreedata/mcp-pinot/commit/1c7d3f9cd384854bf72c127d230bdb32299475ad"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/startreedata/mcp-pinot/issues/90"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/startreedata/mcp-pinot/pull/95"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/startreedata/mcp-pinot/security/advisories/GHSA-73cv-556c-w3g6"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/startreedata/mcp-pinot/security/advisories/GHSA-73cv-556c-w3g6"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}


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