Report: CVE-2025-64340 - FastMCP has a Command Injection vulnerability - Gemini CLI - Analysis

Report: CVE-2025-64340 - FastMCP has a Command Injection vulnerability - Gemini CLI - Analysis

CVE ID :CVE-2025-64340 Published : April 3, 2026, 3:16 p.m. | 30 minutes ago Description :FastMCP is the standard framework for building MCP applications. Prior to version 3.2.0, server names containing shell metacharacters (e.g., &) can cause command injection on Windows when passed to fastmcp install claude-code or fastmcp install gemini-cli. These install paths use subprocess.run() with a list argument, but on Windows the target CLIs often resolve to .cmd wrappers that are executed through cmd.exe, which interprets metacharacters in the flattened command string. This issue has been patched in version 3.2.0. Severity: 0.0 | NA Visit the link for more details, such as CVSS details, affected products, timeline, and more...

CVE Details

Published
April 3, 2026
Affected Product: Windows
Impact: command injection