# MAL-2026-14295: Malicious code in mcp-dev-toolkit (npm)


- **Type:** Malicious package
- **Package:** `mcp-dev-toolkit` (npm)
- **Published:** 19 Aug 2026

## What is MAL-2026-14295?

MAL-2026-14295 is a malicious package in mcp-dev-toolkit, published on 19 Aug 2026. 

### Official description

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.

## What should I do about MAL-2026-14295?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

## Fix prompt for AI coding agents

```text
MAL-2026-14295 is a malicious package: mcp-dev-toolkit (npm). Every version was published to cause harm.

Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.

Reference: https://insights.sbomify.com/MAL-2026-14295/ (Markdown: https://insights.sbomify.com/MAL-2026-14295/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-14295

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-14295/
Summaries are generated and may contain mistakes; the official description above is the record.