CVE-2026-49257

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Source

https://cve.org/CVERecord?id=CVE-2026-49257

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49257.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-49257

Aliases

Published

2026-06-18T21:01:10.984Z

Modified

2026-07-15T01:48:54.591144054Z

Severity

10.0 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H CVSS Calculator

Summary

mcp-pinot: Unauthenticated tool invocation via default oauth_enabled=False + host 0.0.0.0 bind

Details

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

Database specific

{
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49257.json",
    "cwe_ids": [
        "CWE-306"
    ]
}

References

Affected packages

Git / github.com/startreedata/mcp-pinot

Affected ranges

Type

GIT

Repo

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

Events

Introduced

Fixed

1c7d3f9cd384854bf72c127d230bdb32299475ad

Database specific

{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.1.0"
        }
    ]
}

Affected versions

v1.*

v1.0.0

v1.1.0

v2.*

v2.0.0

v2.1.0

v2.2.0

v2.3.0

v3.*

v3.0.0

v3.0.1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49257.json"