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CVE-2026-11717

Quick assessment

Affected
Google MCP Toolbox for Databases (googleapis/mcp-toolbox)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Google MCP Toolbox for Databases (googleapis/mcp-toolbox)是美国Google公司的一个数据库管理工具箱。 Google MCP Toolbox for Databases (googleapis/mcp-toolbox) 1.3.0及之前版本存在授权问题漏洞，该漏洞源于validateOpaqueToken路径中认证绕过问题，可能导致授予底层数据的访问权限。

AI Predicted 9.8 Difficulty: Moderate EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
Google MCP Toolbox for Databases (googleapis/mcp-toolbox) 1.0.0≤ 1.3.0 affected
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I. Basic Information for CVE-2026-11717

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An authentication bypass vulnerability exists in the generic opaque token validation path (validateOpaqueToken) of googleapis/mcp-toolbox. When verifying an unparsed opaque token via an OAuth 2.0 introspection endpoint (RFC 7662), the toolbox decodes the response into an introspectResp struct where the Active field is declared as a pointer to a boolean (*bool). The code only explicitly rejects a token if the response contains a populated active field set to false (if introspectResp.Active != nil && !*introspectResp.Active). If an introspection endpoint responds with a payload that completely omits the mandatory active key, the internal variable remains nil, causing the conditional check to short-circuit. As a result, Toolbox accepts authorization tokens missing the "active" field, granting access to protected tools and underlying data sources.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Google MCP Toolbox for Databases (googleapis/mcp-toolbox) 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Google MCP Toolbox for Databases (googleapis/mcp-toolbox)是美国Google公司的一个数据库管理工具箱。 Google MCP Toolbox for Databases (googleapis/mcp-toolbox) 1.3.0及之前版本存在授权问题漏洞，该漏洞源于validateOpaqueToken路径中认证绕过问题，可能导致授予底层数据的访问权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Google MCP Toolbox for Databases (googleapis/mcp-toolbox) 1.0.0 ~ 1.3.0 -

II. Public POCs for CVE-2026-11717

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III. Intelligence Information for CVE-2026-11717

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Patches & Fixes for CVE-2026-11717 (1)

Same Patch Batch · Google · 2026-06-18 · 4 CVEs total

CVE-2026-11719 Google MCP Toolbox for Databases (googleapis/mcp-toolbox) 授权问题漏洞
CVE-2026-11718 Google MCP Toolbox for Databases (googleapis/mcp-toolbox) 授权问题漏洞
CVE-2026-28573 Google Android 拒绝服务漏洞

IV. Related Vulnerabilities

Same product: MCP Toolbox for Databases (googleapis/mcp-toolbox)
Same vendor: Google
Same weakness: CWE-287

V. Comments for CVE-2026-11717

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