# MAL-2026-6241: Malicious code in atlasora-shared (npm)


- **Type:** Malicious package
- **Package:** `atlasora-shared` (npm)
- **Published:** 20 Jun 2026

## What is MAL-2026-6241?

MAL-2026-6241 is a malicious package in atlasora-shared, published on 20 Jun 2026. 

### Official description

package.json declares `"postinstall": "node install.js"`, causing install.js to run automatically on `npm install`. install.js requires `https`, `fs`, `os`, and `child_process`, collects host identifiers via `os.hostname()` and `os.userInfo()`, executes shell commands via `execSync(...)`, probes filesystem paths with `fs.existsSync(...)`, and POSTs the collected data to a remote endpoint via `https.request(...)`. This is the canonical install-time system-information exfiltration pattern: identifying data is gathered from the installer's machine and beaconed outbound on every install, with no documented purpose tied to the package's stated function. Installing this package automatically leaks host and user information to an external destination.

## What should I do about MAL-2026-6241?

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-2026-6241 is a malicious package: atlasora-shared (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-2026-6241/ (Markdown: https://insights.sbomify.com/MAL-2026-6241/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-6241

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-6241/
Summaries are generated and may contain mistakes; the official description above is the record.