CVE-2026-18482

CVSS 9.8 (critical) · published 2026-08-20

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.

Weakness: CWE-78

Source: NVD CVE-2026-18482

References

• https://github.com/neomjs/neo/commit/5acc564ea1b278bca5fab1f8f397a6ba9b849d75
• https://github.com/neomjs/neo/commit/88c77fc4
• https://novice-22.com/posts/neo-mjs/
• https://novice-22.com/posts/neo-mjs/

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