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CVE-2026-93328

Missing Authorization in MCP Toolbox for Databases allows Arbitrary File Read and Write

CRITICAL
9.3
CVSS Score
Published: October 26, 2026 at 02:24 PM UTC
Updated: October 26, 2026 at 05:17 PM UTC
1 product affected across 1 vendorMCP Toolbox for Databases

Using MCP Toolbox for Databases (googleapis/mcp-toolbox) by Google Cloud?

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Severity
CRITICAL9.3
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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.

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/3454

SSVC — Action Prioritization

SSVCNo known exploitAutomatableTotal impact

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

CVSS

9.3CRITICALGoogleCloud
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-862CWE-22

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