CyberRota Analysis
AI-GeneratedThe bigquery-execute-sql tool in Google mcp-toolbox versions 0.16.1 to 1.4.0 contains a vulnerability that allows authenticated attackers to bypass dataset validation checks, enabling them to access restricted structural DDL schemas and downstream data. This flaw arises from a fail-open logic issue when the BigQuery dry-run API returns an empty array, compromising data confidentiality. Organizations using affected versions of the mcp-toolbox should prioritize remediation to protect sensitive data from unauthorized access.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
An improper authorization and security-boundary bypass vulnerability in the bigquery-execute-sql tool component of Google mcp-toolbox versions 0.16.1 through 1.4.0 allows an authenticated attacker to bypass allowedDatasets validation checks. The toolbox relies on the BigQuery dry-run API to enforce dataset restrictions, but due to a fail-open logic flaw, it bypasses validation when the API returns an empty array for specialized constructs. This allows the attacker to extract structural DDL schemas for explicitly excluded datasets via INFORMATION_SCHEMA, and access downstream federated row data via EXTERNAL_QUERY connections.
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