{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-123811","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-11-06T15:27:56.226Z","datePublished":"2026-11-09T21:01:42.490Z","dateUpdated":"2026-11-09T21:01:42.490Z"},"containers":{"cna":{"title":"Dynatrace MCP Server: Unauthenticated HTTP MCP Tool Invocation in `@dynatrace-oss/dynatrace-mcp-server`","problemTypes":[{"descriptions":[{"cweId":"CWE-306","lang":"en","description":"CWE-306: Missing Authentication for Critical Function","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L","version":"3.1"}}],"references":[{"name":"https://github.com/dynatrace-oss/dynatrace-mcp/security/advisories/GHSA-p7w7-4929-vpj5","tags":["x_refsource_CONFIRM"],"url":"https://github.com/dynatrace-oss/dynatrace-mcp/security/advisories/GHSA-p7w7-4929-vpj5"},{"name":"https://github.com/dynatrace-oss/dynatrace-mcp/commit/8f12972481e9165e8bd24d63b0a9e71976f85a43","tags":["x_refsource_MISC"],"url":"https://github.com/dynatrace-oss/dynatrace-mcp/commit/8f12972481e9165e8bd24d63b0a9e71976f85a43"},{"name":"https://github.com/dynatrace-oss/dynatrace-mcp/commit/ac5251edfcf9511c6c662414da743383e7d1451c","tags":["x_refsource_MISC"],"url":"https://github.com/dynatrace-oss/dynatrace-mcp/commit/ac5251edfcf9511c6c662414da743383e7d1451c"},{"name":"https://github.com/dynatrace-oss/dynatrace-mcp/commit/ead820322238633f5b289778c57faf5d3a8d73f9","tags":["x_refsource_MISC"],"url":"https://github.com/dynatrace-oss/dynatrace-mcp/commit/ead820322238633f5b289778c57faf5d3a8d73f9"},{"name":"https://github.com/dynatrace-oss/dynatrace-mcp/releases/tag/v2.0.0","tags":["x_refsource_MISC"],"url":"https://github.com/dynatrace-oss/dynatrace-mcp/releases/tag/v2.0.0"}],"affected":[{"vendor":"dynatrace-oss","product":"dynatrace-mcp","versions":[{"version":"< 2.0.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-11-09T21:01:42.490Z"},"descriptions":[{"lang":"en","value":"Dynatrace MCP Server is an MCP server for Dynatrace Observability. Prior to 2.0.0, a server started with the --http option accepts JSON-RPC tools/call requests without authentication, session validation, or Host and Origin protections before dispatching them under the server's configured Dynatrace credentials. A network-reachable caller can invoke execute_dql to read logs, security events, user sessions, and other Grail data, or invoke create_dynatrace_notebook to create tenant-visible notebooks. The send_event path is not affected because its requestHumanApproval gate blocks this attack path, and reset_grail_budget only demonstrates dispatch without accessing Dynatrace data. This issue is fixed in version 2.0.0."}],"source":{"advisory":"GHSA-p7w7-4929-vpj5","discovery":"UNKNOWN"}}}}