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Critical · 9.8 CVE-2026-18482 EUVD-2026-63326GHSA-cmg9-62q9-xmww

CVE-2026-18482

Published Aug 20, 2026 · Updated Aug 27, 2026 · Assigned by certcc

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.

Affected products

VendorProductAffectedFixed
Klarso neo-mjs < 88c77fc4 88c77fc4

References