{"cve":"CVE-2025-62801","nvd":{"published":"2025-10-28T22:15:37.950","modified":"2026-10-08T11:10:00.250","status":"Analyzed","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.","cvss_v4":{"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","score":5.4},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-78"],"references":["https://github.com/jlowin/fastmcp/security/advisories/GHSA-rj5c-58rq-j5g5","https://github.com/jlowin/fastmcp/security/advisories/GHSA-rj5c-58rq-j5g5"],"products":["jlowin:fastmcp"],"source":"nvd","synced_at":"2026-10-19T22:14:53.307938015+00:00"},"epss":{"cve":"CVE-2025-62801","score":0.00227,"percentile":0.13343,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-rj5c-58rq-j5g5","url":"https://osv.dev/vulnerability/GHSA-rj5c-58rq-j5g5","summary":"FastMCP vulnerable to windows command injection in FastMCP Cursor installer via server_name","modified":"2026-07-07T17:56:56.677841650Z","packages":[{"ecosystem":"PyPI","name":"fastmcp","purl":"pkg:pypi/fastmcp","ranges":["<2.13.0"],"fixed":["2.13.0"]}]},{"id":"PYSEC-2026-1365","url":"https://osv.dev/vulnerability/PYSEC-2026-1365","summary":"FastMCP vulnerable to windows command injection in FastMCP Cursor installer via server_name","modified":"2026-07-07T17:47:12.941242351Z","packages":[{"ecosystem":"PyPI","name":"fastmcp","purl":"pkg:pypi/fastmcp","ranges":["<2.13.0"],"fixed":["2.13.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}