CVE-2026-49257

Published: Jun 18, 2026Modified: Jun 23, 2026Deferred

10.0

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Exploitability: 3.9 / Impact: 6.0

Source: security-advisories@github.com (Secondary)

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

Related CWEs

CWE-306

Missing Authentication for Critical Function

The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

References (5)

https://github.com/startreedata/mcp-pinot/commit/1c7d3f9cd384854bf72c127d230bdb32299475ad

Source: security-advisories@github.com

https://github.com/startreedata/mcp-pinot/issues/90

Source: security-advisories@github.com

https://github.com/startreedata/mcp-pinot/pull/95

Source: security-advisories@github.com

https://github.com/startreedata/mcp-pinot/security/advisories/GHSA-73cv-556c-w3g6

Source: security-advisories@github.com

https://github.com/startreedata/mcp-pinot/security/advisories/GHSA-73cv-556c-w3g6

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.