SQL Injection and Security Boundary Bypass in googleapis/mcp-toolbox

{
  "id": "9cbe789d6fd14f77bc4edbf381eeb88cc08cca83495d5ce677e5987d14d2ab2c",
  "url": "https://osv.dev/vulnerability/CVE-2026-15829",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "SQL Injection and Security Boundary Bypass in googleapis/mcp-toolbox",
    "summary": "A SQL injection (CWE-89) and security boundary bypass (CWE-863) vulnerability exists in the prebuilt BigQuery forecasting tool (bigquery-forecast) of googleapis/mcp-toolbox. The tool accepts client-controlled parameters (data_col, timestamp_col, and id_cols) as plain strings and interpolates them unescaped via fmt.Sprintf directly into a generated AI.FORECAST table-valued SELECT statement. While MCP Toolbox utilizes an allowedDatasets mechanism to restrict queries, this defense only validates the history_data parameter; the final assembled query is executed without re-validation. An attacker can break out of the string literal fields (such as timestamp_col) to inject a valid multi-statement or cross-dataset query block. This allows an unauthorized user to bypass the operator-configured allowedDatasets boundary and read arbitrary BigQuery tables.",
    "evidence": "osv:CVE-2026-15829",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-15829",
      "aliases": [
        "CVE-2026-15829"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/googleapis/mcp-toolbox",
              "type": "GIT",
              "events": [
                {
                  "introduced": "1a6dfe8d37d0f42fb3fd3f75c50988534dbc1b85"
                },
                {
                  "last_affected": "b0010060a939455d91e4f8ba62dc3e72b1892469"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0.13.0"
                      },
                      {
                        "last_affected": "1.3.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "cpe": "cpe:2.3:a:google:mcp_toolbox_for_databases:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.13.0"
                      },
                      {
                        "last_affected": "1.3.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.3.0",
            "v1.2.0",
            "v1.1.0",
            "v1.0.0",
            "v0.32.0",
            "v0.31.0",
            "v0.30.0",
            "v0.29.0",
            "v0.28.0",
            "v0.27.0",
            "v0.26.0",
            "v0.25.0",
            "v0.24.0",
            "v0.23.0",
            "v0.22.0",
            "v0.21.0",
            "v0.20.0",
            "v0.19.1",
            "v0.18.0",
            "v0.17.0",
            "v0.16.0",
            "v0.15.0",
            "v0.14.0",
            "v0.13.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-15829.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:29.716630379Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/15xxx/CVE-2026-15829.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-15829",
        "https://github.com/googleapis/mcp-toolbox/pull/3324"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-863",
          "CWE-89"
        ],
        "cna_assigner": "Google",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/15xxx/CVE-2026-15829.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-15829",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496768,
  "published_at": "2026-07-21T16:39:54.968+00:00"
}