CVE-2026-11720: Path Traversal in googleapis/mcp-toolbox HTTP Tool URL Builder
Google · MCP Toolbox for Databases (googleapis/mcp-toolbox)
Vendor fix available · Affected: Google MCP Toolbox for Databases (googleapis/mcp-toolbox) · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 45% of scored CVEs
DescriptionCVE.org
A path traversal vulnerability exists in the HTTP tool URL builder of googleapis/mcp-toolbox. When constructing downstream API requests, the URL builder substitutes user-controlled pathParams into the configured tool path and parses the resulting string as a relative URL. While it checks that the input does not alter the scheme, host, or user info, it relies on ResolveReference for the final URL resolution. Because dot segments (../) are normalized during this resolution step, an attacker can supply path parameters containing directory traversal sequences to escape the operator-configured path scope. This allows the client to coerce the toolbox into making requests to unintended endpoints on the same target host while forwarding the toolbox's configured credentials (e.g., bypassing a restricted path like /api/v1/users/{{.id}} to reach /admin/secrets).
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Google · MCP Toolbox for Databases (googleapis/mcp-toolbox)before 1.3.0
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CoverageNo articles yet
No CyberSIXT article names CVE-2026-11720 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.