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Critical · 9.3 Public exploit CVE-2026-93328 EUVD-2026-109936GHSA-2gc9-c85v-5vwr

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

Published Oct 26, 2026 · Updated Oct 26, 2026 · Assigned by GoogleCloud

Vendor: Google Cloud Product: MCP Toolbox for Databases (googleapis/mcp-toolbox)

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 products

VendorProductAffectedFixed
Google Cloud MCP Toolbox for Databases (googleapis/mcp-toolbox) 1.2.0 – < 1.5.0 1.5.0

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

  • sustilliano/cve-2026-93328-gate ★ 1 · Oct 27, 2026

    The authorization layer CVE-2026-93328 was missing: scoped grants, path confinement, and signed receipts in front of MCP storage tools. CVE reproduction + gated proof, 10/10 tests.

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

References