CVE-2026-49257
CRITICALmcp-pinot: Unauthenticated tool invocation via default oauth_enabled=False + host 0.0.0.0 bind
Title source: cnaDescription
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
References (4)
Core 4
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/startreedata/mcp-pinot/security/advisories/GHSA-73cv-556c-w3g6
X_Refsource_Misc x_refsource_misc
https://github.com/startreedata/mcp-pinot/issues/90
X_Refsource_Misc x_refsource_misc
https://github.com/startreedata/mcp-pinot/pull/95
X_Refsource_Misc x_refsource_misc
https://github.com/startreedata/mcp-pinot/commit/1c7d3f9cd384854bf72c127d230bdb32299475ad
Scores
CVSS v3
10.0
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Details
CWE
CWE-306
Status
published
Products (1)
startreedata/mcp-pinot
< 3.1.0
Published
Jun 18, 2026
Tracked Since
Jun 19, 2026