{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-102610","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-09-29T14:18:02.921Z","datePublished":"2026-11-06T20:55:55.852Z","dateUpdated":"2026-11-06T20:55:55.852Z"},"containers":{"cna":{"title":"fast-agent: `fast-agent serve` binds HTTP to 0.0.0.0 with no authentication by default; with --shell this is unauthenticated remote command execution","problemTypes":[{"descriptions":[{"cweId":"CWE-78","lang":"en","description":"CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-306","lang":"en","description":"CWE-306: Missing Authentication for Critical Function","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.4,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/evalstate/fast-agent/security/advisories/GHSA-9vhv-g5hf-m7m7","tags":["x_refsource_CONFIRM"],"url":"https://github.com/evalstate/fast-agent/security/advisories/GHSA-9vhv-g5hf-m7m7"},{"name":"https://github.com/evalstate/fast-agent/pull/828","tags":["x_refsource_MISC"],"url":"https://github.com/evalstate/fast-agent/pull/828"},{"name":"https://github.com/evalstate/fast-agent/commit/ba99f89c3ec7f1ef1c8b1ebce381c12b60dfea29","tags":["x_refsource_MISC"],"url":"https://github.com/evalstate/fast-agent/commit/ba99f89c3ec7f1ef1c8b1ebce381c12b60dfea29"},{"name":"https://github.com/evalstate/fast-agent/releases/tag/v0.7.21","tags":["x_refsource_MISC"],"url":"https://github.com/evalstate/fast-agent/releases/tag/v0.7.21"}],"affected":[{"vendor":"evalstate","product":"fast-agent","versions":[{"version":"< 0.7.21","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-11-06T20:55:55.852Z"},"descriptions":[{"lang":"en","value":"fast-agent is a framework for building, running, and evaluating AI agents with Model Context Protocol support. Prior to 0.7.21, fast-agent serve uses HTTP transport bound to 0.0.0.0 on port 8000 without authentication, allowing any network client that can reach the /mcp endpoint to invoke the exposed agent tool. When the server is started with --shell, the agent can call the local execute tool implemented by tools/local_shell_executor.py, so an unauthenticated remote client can cause operating-system commands to run as the server user; without --shell, the client can still consume the operator's model and configured MCP tools. The defaults are defined in cli/commands/serve.py and mcp/server/agent_server.py, and the non-interactive server permission prompt does not prevent the described access. This issue is fixed in version 0.7.21."}],"source":{"advisory":"GHSA-9vhv-g5hf-m7m7","discovery":"UNKNOWN"}}}}