CVE-2026-15829
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
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| MCP Toolbox for Databases (googleapis/mcp-toolbox) | 0.13.0 <= 1.3.0 | affected |
Weaknesses
- CWE-89: CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
- CWE-863: CWE-863: Incorrect Authorization
References
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