RCE in Jlowin Fastmcp
CVE-2025-62801
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…
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.000 (15.7th percentile) — read the EPSS interpretation.
Affected products
- Jlowin Fastmcp — versions < 2.13.0
Weakness classification (CWE)
References
- https://github.com/jlowin/fastmcp/security/advisories/GHSA-rj5c-58rq-j5g5 (x_refsource_CONFIRM)