# MAL-2026-6349: Malicious code in bug-monorepo (npm)


- **Type:** Malicious package
- **Package:** `bug-monorepo` (npm)
- **Published:** 23 Jun 2026

## What is MAL-2026-6349?

MAL-2026-6349 is a malicious package in bug-monorepo, published on 23 Jun 2026. 

### Official description

package.json declares `preinstall: node index.js`, causing index.js to run automatically on `npm install`. The script collects hostname, username, home directory, DNS servers, and the full package.json, and reads `/etc/passwd` and `/etc/hosts` (index.js:18), then HTTPS-POSTs the JSON payload to `cp5uzinglyy3ifb8gvvgvq5qvh19p0dp.oastify.com` (a Burp Collaborator out-of-band subdomain controlled by the attacker). Empty author/description fields and the generic `bug-monorepo` name are consistent with a dependency-confusion recon package targeting an internal namespace. Installing this package leaks host identity and sensitive system file contents to an attacker-controlled endpoint.

## What should I do about MAL-2026-6349?

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-2026-6349 is a malicious package: bug-monorepo (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-2026-6349/ (Markdown: https://insights.sbomify.com/MAL-2026-6349/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-6349

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-6349/
Summaries are generated and may contain mistakes; the official description above is the record.