CVE-2026-18482
Critical · 9.8CVSS
9.8
EPSS
1.7%
Published
Aug 20, 2026
CISA due date
—
The record
Neo.mjs contains a command injection vulnerability within the FileSystemService.mjs component of the ai/mcp/server/file-system MCP server, where the checkSyntax() and runPlaywrightTest() functions unsafely interpolate caller-controlled absolutePath values into shell commands, enabling arbitrary OS command execution when an AI agent is induced to invoke these tools. Commit 88c77fc fixes these vulnerabilities.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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