CVE-2026-49257
mcp-pinot: Unauthenticated tool invocation via default oauth_enabled=False + host 0.0.0.0 bind
CVSS Score
10.0
EPSS Score
0.0%
EPSS Percentile
0th
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
| CWE | CWE-306 |
| Vendor | startreedata |
| Product | mcp-pinot |
| Published | Jun 18, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
startreedata / mcp-pinot
< 3.1.0
References
github.com: https://github.com/startreedata/mcp-pinot/security/advisories/GHSA-73cv-556c-w3g6 github.com: https://github.com/startreedata/mcp-pinot/issues/90 github.com: https://github.com/startreedata/mcp-pinot/pull/95 github.com: https://github.com/startreedata/mcp-pinot/commit/1c7d3f9cd384854bf72c127d230bdb32299475ad