Critical severity9.8NVD Advisory· Published Aug 20, 2026· Updated Sep 3, 2026
CVE-2026-18482
CVE-2026-18482
Description
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.
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Affected products
2Patches
Vulnerability mechanics
References
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