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CVE-2026-49257— mcp-pinot: Unauthenticated tool invocation via default oauth_enabled=False + host 0.0.0.0 bind

Quick assessment

Affected
startreedata mcp-pinot
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.

Startreedata mcp-pinot是Startreedata公司的一个消息队列中间件产品。 Startreedata mcp-pinot 3.1.0之前版本存在授权问题漏洞，该漏洞源于缺乏身份验证，运行HTTP MCP服务器绑定到0.0.0.0:8080，导致网络相邻攻击者可获得完全读写访问权限。

CVSS 10.0 · Critical EPSS 0.93% · P58

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
startreedata mcp-pinot < 3.1.0 affected
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I. Basic Information for CVE-2026-49257

Vulnerability Information
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Vulnerability Title
mcp-pinot: Unauthenticated tool invocation via default oauth_enabled=False + host 0.0.0.0 bind
Source: CVE Program / CVE List V5
Vulnerability Description
mcp-pinot is a Python-based Model Context Protocol (MCP) server for interacting with Apache Pinot. In versions 3.0.1 and below, mcp-pinot defaults to running an HTTP MCP server bound to 0.0.0.0:8080 with no authentication enabled. All MCP tools, including SQL query execution, schema creation, and table-config mutation, are reachable by any network-adjacent caller. The server proxies these calls using server-side Pinot credentials, producing a confused-deputy condition that yields full read/write access to the configured Pinot cluster. This issue has been fixed in version 3.1.0
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Startreedata mcp-pinot 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Startreedata mcp-pinot是Startreedata公司的一个消息队列中间件产品。 Startreedata mcp-pinot 3.1.0之前版本存在授权问题漏洞，该漏洞源于缺乏身份验证，运行HTTP MCP服务器绑定到0.0.0.0:8080，导致网络相邻攻击者可获得完全读写访问权限。
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
startreedata mcp-pinot < 3.1.0 -

II. Public POCs for CVE-2026-49257

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7363 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
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III. Intelligence Information for CVE-2026-49257

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Patches & Fixes for CVE-2026-49257 (1)

Vendor Advisories for CVE-2026-49257 (1)

News Coverage for CVE-2026-49257 (1)

IV. Related Vulnerabilities

Same weakness: CWE-306

V. Comments for CVE-2026-49257

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