CVE Catalog

CVE-2026-102242

HighCVSS 8.6
Published: Updated: Translated: NVD NIST

Summary

In Google MCP Toolbox for Databases versions 1.2.0 through 1.9.0, the allowedLocalRoots path validation checks directories lexically without resolving symbolic links. A remote authenticated attacker with tool execution permissions can bypass directory boundary restrictions and access or overwrite arbitrary local files outside the permitted root directories.

Risk Assessment

An attacker could read or overwrite files outside the permitted directories, leading to data leakage, configuration tampering, or code execution. However, this requires authentication and tool execution permissions.

Recommendation

Upgrade Google MCP Toolbox for Databases to a version newer than 1.9.0 where path validation resolves symbolic links before checking directory boundaries. Restrict tool execution permissions to trusted users.

Related vulnerabilities

Original NVD description (English source)

Improper link resolution (CWE-59 / CWE-22) in the allowedLocalRoots path validation in Google MCP Toolbox for Databases versions 1.2.0 through 1.9.0 allows a remote authenticated attacker with tool execution permissions to bypass directory boundary restrictions via symbolic links. Because path validation checks directories lexically without resolving symbolic links first, an attacker can access or overwrite arbitrary local files located outside the permitted root directories.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS