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.
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Fixes
Solution
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Workaround
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References
| Link | Providers |
|---|---|
| https://github.com/googleapis/mcp-toolbox/pull/3810 |
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History
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 |
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| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: Google
Published:
Updated: 2026-09-29T18:35:11.181Z
Reserved: 2026-09-28T18:43:08.600Z
Link: CVE-2026-102242
No data.
Status : Received
Published: 2026-09-29T18:17:06.887
Modified: 2026-09-29T18:17:06.887
Link: CVE-2026-102242
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OpenCVE Enrichment
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