Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-14537— Authorization Bypass in MCP Toolbox Legacy HTTP Endpoints

Quick assessment

Affected
Google mcp-toolbox
Exploitation
Public or AI PoC available; prioritize validation
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是美国Google公司的数据库管理工具。 Google MCP Toolbox for Databases v1.3.0版本和v1.4.0版本存在授权问题漏洞，该漏洞源于直接HTTP API工具调用端点存在授权不正确问题，可能导致未经身份验证的攻击者在--enable-api标志激活时通过遗留HTTP端点发送工具调用请求来调用受scopeRequired功能保护的工具。

CVSS 8.1 · High EPSS 0.25% · P15

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
Google mcp-toolbox 1.3.0 affected
v1.4.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-14537

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Authorization Bypass in MCP Toolbox Legacy HTTP Endpoints
Source: CVE Program / CVE List V5
Vulnerability Description
Incorrect Authorization in the direct HTTP API tool invocation endpoint in Google mcp-toolbox versions v1.3.0 and v1.4.0 allows an unauthenticated attacker to invoke tools protected by the scopeRequired feature via sending tool invocation requests through legacy HTTP endpoints when the --enable-api flag is active.
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:H/SC:N/SI:N/SA:N/E:U
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Google MCP Toolbox for Databases 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Google MCP Toolbox for Databases是美国Google公司的数据库管理工具。 Google MCP Toolbox for Databases v1.3.0版本和v1.4.0版本存在授权问题漏洞，该漏洞源于直接HTTP API工具调用端点存在授权不正确问题，可能导致未经身份验证的攻击者在--enable-api标志激活时通过遗留HTTP端点发送工具调用请求来调用受scopeRequired功能保护的工具。
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 1.3.0 -

II. Public POCs for CVE-2026-14537

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8407 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-14537

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-14537 (1)

Same Patch Batch · Google · 2026-07-31 · 5 CVEs total

CVE-2026-14540 8.0 HIGH Server-Side Request Forgery via Unrestricted HTTP Redirection in MCP Toolbox
CVE-2026-14541 8.0 HIGH Authentication Bypass and Audience Confusion in MCP Toolbox OAuth Provider
CVE-2026-14539 6.6 MEDIUM Denial of Service via Unrestricted Payload Buffering in MCP Toolbox
CVE-2026-14538 5.7 MEDIUM BigQuery Dataset Allowlist Bypass via Metadata Dry-Run in MCP Toolbox

IV. Related Vulnerabilities

Same product: mcp-toolbox
Same vendor: Google
Same weakness: CWE-863

V. Comments for CVE-2026-14537

No comments yet

Leave a comment