CVE-2026-93328Critical· 9.3▾ MidnightPath 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 extern…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 51.2 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
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.
mcp_toolbox_for_databases_googleapis_mcp-toolbox >= 1.2.0 < 1.5.0Upgrade 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.
Connected by shared product, vendor, weakness, or advisory.
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