{"id":"CVE-2025-62801","state":"PUBLISHED","title":"FastMCP vulnerable to windows command injection in FastMCP Cursor installer via server_name","description":"FastMCP is the standard framework for building MCP applications. Versions prior to 2.13.0, a command-injection vulnerability lets any attacker who can influence the server_name field of an MCP execute arbitrary OS commands on Windows hosts that run fastmcp install cursor. This vulnerability is fixed in 2.13.0.","publishedAt":"2025-10-28T21:36:41.167Z","updatedAt":"2025-10-29T14:54:56.687Z","severity":{"score":5.4,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["jlowin fastmcp"],"affected":[{"vendor":"jlowin","product":"fastmcp","versions":[{"version":"< 2.13.0","status":"affected"}]}],"references":["https://github.com/jlowin/fastmcp/security/advisories/GHSA-rj5c-58rq-j5g5"],"weaknesses":["CWE-78"],"ingestedAt":"2026-10-29T20:09:48.677Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/62xxx/CVE-2025-62801.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-62801","state":"PUBLISHED","datePublished":"2025-10-28T21:36:41.167Z","dateUpdated":"2025-10-29T14:54:56.687Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2025-10-22T18:55:48.012Z"},"containers":{"cna":{"title":"FastMCP vulnerable to windows command injection in FastMCP Cursor installer via server_name","descriptions":[{"lang":"en","value":"FastMCP is the standard framework for building MCP applications. Versions prior to 2.13.0, a command-injection vulnerability lets any attacker who can influence the server_name field of an MCP execute arbitrary OS commands on Windows hosts that run fastmcp install cursor. This vulnerability is fixed in 2.13.0."}],"affected":[{"vendor":"jlowin","product":"fastmcp","versions":[{"version":"< 2.13.0","status":"affected"}]}],"references":[{"url":"https://github.com/jlowin/fastmcp/security/advisories/GHSA-rj5c-58rq-j5g5","name":"https://github.com/jlowin/fastmcp/security/advisories/GHSA-rj5c-58rq-j5g5","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"ACTIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"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"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2025-10-28T21:36:41.167Z"},"source":{"advisory":"GHSA-rj5c-58rq-j5g5","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/jlowin/fastmcp/security/advisories/GHSA-rj5c-58rq-j5g5","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-10-29T14:54:52.707678Z","id":"CVE-2025-62801","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-29T14:54:56.687Z"}}]}}}