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.
Advisories

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Fixes

Solution

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Workaround

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History

Tue, 29 Sep 2026 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Google
Google mcp Toolbox For Databases
Vendors & Products Google
Google mcp Toolbox For Databases

Tue, 29 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 29 Sep 2026 18:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Path Traversal via Symlink Following in allowedLocalRoots in MCP Toolbox for Databases
Weaknesses CWE-22
CWE-59
References
Metrics cvssV4_0

{'score': 8.6, 'vector': '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'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: Google

Published:

Updated: 2026-09-29T18:35:11.181Z

Reserved: 2026-09-28T18:43:08.600Z

Link: CVE-2026-102242

cve-icon Vulnrichment

Updated: 2026-09-29T18:35:07.620Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-29T18:17:06.887

Modified: 2026-09-29T21:36:39.547

Link: CVE-2026-102242

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-29T21:15:16Z

Weaknesses