CVE-2026-49257
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
- CVSS 3.1
- 10.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - EPSS
- 0.9% chance of exploitation in the next 30 days; higher than 60% of CVEs (scores of 2026-10-25)
- CWE
- CWE-306
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-73cv-556c-w3g6 | PyPI | mcp-pinot-server | <3.1.0 | 3.1.0 |
| PYSEC-2026-410 | PyPI | mcp-pinot-server | <3.1.0 | 3.1.0 |
References
- https://github.com/startreedata/mcp-pinot/commit/1c7d3f9cd384854bf72c127d230bdb32299475ad
- https://github.com/startreedata/mcp-pinot/issues/90
- https://github.com/startreedata/mcp-pinot/pull/95
- https://github.com/startreedata/mcp-pinot/security/advisories/GHSA-73cv-556c-w3g6
- https://github.com/startreedata/mcp-pinot/security/advisories/GHSA-73cv-556c-w3g6