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CVE-2026-49257

CRITICAL
10.0
CVSS 3.1
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

Metadata

CVE ID
CVE-2026-49257
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-05-28 14:33 UTC
Published
2026-06-18 21:01 UTC
Last updated
2026-06-18 21:01 UTC
Primary CWE
CWE-306
CWE-306: Missing Authentication for Critical Function
Vendor / Product
startreedata / mcp-pinot
Sources
cve.org  ·  NVD

Severity & Metrics

10.0 CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected products (1)
VendorProductPlatformVersions
startreedata mcp-pinot — < 3.1.0
Weakness (CWE)
CWESourceDescription
CWE-306 cna CWE-306: Missing Authentication for Critical Function
CVSS scores (1)
ScoreSeverityVersionSourceVector
10.0 CRITICAL 3.1 cna CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
References (4)
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