CVE-2025-62801FastMCP vulnerable to windows command injection in FastMCP Cursor installer via server_name
Updated under an hour ago ()
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It affects jlowin fastmcp. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 5.4 MEDIUM (v4.0, CNA)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
- Weakness (CWE)
- CWE-78
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Oct 29, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
jlowin fastmcp jlowin:fastmcp (from the name) | before 2.13.0 | CNA record |
jlowin fastmcp jlowin:fastmcp | before 2.13.0 | NVD |
References
- https://github.com/jlowin/fastmcp/security/advisories/GHSA-rj5c-58rq-j5g5x-refsource-confirm, exploit, third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.