{"id":"CVE-2026-49257","state":"PUBLISHED","title":"mcp-pinot: Unauthenticated tool invocation via default oauth_enabled=False + host 0.0.0.0 bind","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","publishedAt":"2026-06-18T21:01:10.984Z","updatedAt":"2026-06-22T18:08:18.034Z","severity":{"score":10,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["startreedata mcp-pinot"],"affected":[{"vendor":"startreedata","product":"mcp-pinot","versions":[{"version":"< 3.1.0","status":"affected"}]}],"references":["https://github.com/startreedata/mcp-pinot/security/advisories/GHSA-73cv-556c-w3g6","https://github.com/startreedata/mcp-pinot/issues/90","https://github.com/startreedata/mcp-pinot/pull/95","https://github.com/startreedata/mcp-pinot/commit/1c7d3f9cd384854bf72c127d230bdb32299475ad"],"weaknesses":["CWE-306"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/49xxx/CVE-2026-49257.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-49257","state":"PUBLISHED","datePublished":"2026-06-18T21:01:10.984Z","dateUpdated":"2026-06-22T18:08:18.034Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-28T14:33:01.179Z"},"containers":{"cna":{"title":"mcp-pinot: Unauthenticated tool invocation via default oauth_enabled=False + host 0.0.0.0 bind","descriptions":[{"lang":"en","value":"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"}],"affected":[{"vendor":"startreedata","product":"mcp-pinot","versions":[{"version":"< 3.1.0","status":"affected"}]}],"references":[{"url":"https://github.com/startreedata/mcp-pinot/security/advisories/GHSA-73cv-556c-w3g6","name":"https://github.com/startreedata/mcp-pinot/security/advisories/GHSA-73cv-556c-w3g6","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/startreedata/mcp-pinot/issues/90","name":"https://github.com/startreedata/mcp-pinot/issues/90","tags":["x_refsource_MISC"]},{"url":"https://github.com/startreedata/mcp-pinot/pull/95","name":"https://github.com/startreedata/mcp-pinot/pull/95","tags":["x_refsource_MISC"]},{"url":"https://github.com/startreedata/mcp-pinot/commit/1c7d3f9cd384854bf72c127d230bdb32299475ad","name":"https://github.com/startreedata/mcp-pinot/commit/1c7d3f9cd384854bf72c127d230bdb32299475ad","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":10,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-306","lang":"en","description":"CWE-306: Missing Authentication for Critical Function","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-18T21:01:10.984Z"},"source":{"advisory":"GHSA-73cv-556c-w3g6","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/startreedata/mcp-pinot/security/advisories/GHSA-73cv-556c-w3g6","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-22T18:08:14.343515Z","id":"CVE-2026-49257","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-22T18:08:18.034Z"}}]}}}