MAL-2026-14295
Malicious code in mcp-dev-toolkit (npm)
Details
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## Source: amazon-inspector (eea6d82bd4d62a015c59af54ac277d0381c43203b3475ef1137e57893e67126c) Package mcp-dev-toolkit@1.5.0 contains multiple files whose behavior matches operational malware rather than a developer toolkit. index.js collects host identity data (os.hostname(), cwd, version) and serializes it via JSON.stringify for outbound transmission. spread.js imports child_process alongside https.request and issues outbound GET traffic with hostname/process data. c2_exfil.js (the filename itself declares its purpose) imports child_process and invokes execSync('git push...'), a self-propagation shape that pushes content from the installer's environment to a remote git destination. The combination of a file explicitly named c2_exfil.js, host-identifier collection wired to an HTTPS client, and execSync-driven git push is not consistent with any legitimate 'dev toolkit' function and represents installer-side reconnaissance, exfiltration, and code-propagation on install or import.
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Affected packages
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