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CVE-2026-102242

Path Traversal via Symlink Following in allowedLocalRoots in MCP Toolbox for Databases

HIGH
8.6
CVSS Score
Published: September 29, 2026 at 05:47 PM UTC
Updated: September 29, 2026 at 09:36 PM UTC
1 product affected across 1 vendorMCP Toolbox for Databases

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Severity
HIGH8.6
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://github.com/googleapis/mcp-toolbox/pull/3810

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.6HIGHGoogle
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-59CWE-22

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