Description
Path Traversal and Missing Authorization in cloud-storage source in Google Cloud MCP Toolbox for Databases (googleapis/mcp-toolbox) versions 1.2.0 through 1.4.0 allows an unauthenticated remote attacker to exfiltrate host files to external Google Cloud Storage buckets and overwrite arbitrary local files via crafted tool invocation parameters.
Published: 2026-10-26
Score: 9.3 Critical
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

Upgrade googleapis/mcp-toolbox to version 1.5.0 or later. Configure the security boundaries introduced in v1.5.0 by setting allowedLocalRoots to restrict host file system interactions strictly to designated, isolated directories set allowedBuckets to ensure the tool only reads from and writes to explicit, authorized Google Cloud Storage buckets. Follow the Principle of Least Privilege by running the Toolbox service under an unprivileged OS user account and restricting associated Google Cloud IAM permissions.

Tracking

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Advisories

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History

Mon, 26 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 26 Oct 2026 15:00:00 +0000

Type Values Removed Values Added
Description Path Traversal and Missing Authorization in cloud-storage source in Google Cloud MCP Toolbox for Databases (googleapis/mcp-toolbox) versions 1.2.0 through 1.4.0 allows an unauthenticated remote attacker to exfiltrate host files to external Google Cloud Storage buckets and overwrite arbitrary local files via crafted tool invocation parameters.
Title Missing Authorization in MCP Toolbox for Databases allows Arbitrary File Read and Write
Weaknesses CWE-22
CWE-862
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/U:Amber'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: GoogleCloud

Published:

Updated: 2026-10-26T16:46:45.879Z

Reserved: 2026-09-17T17:27:06.678Z

Link: CVE-2026-93328

cve-icon Vulnrichment

Updated: 2026-10-26T16:40:54.879Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-26T15:16:45.813

Modified: 2026-10-26T17:17:31.020

Link: CVE-2026-93328

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-26T17:00:17Z

Weaknesses