# MAL-2026-13619: Malicious code in atlas-internal (PyPI)


- **Type:** Malicious package
- **Package:** `atlas-internal` (PyPI)
- **Published:** 7 Aug 2026

## What is MAL-2026-13619?

MAL-2026-13619 is a malicious package in atlas-internal, published on 7 Aug 2026. 

### Official description

setup.py overrides the egg_info command to execute automatically during `pip install`. The overridden command collects the installer's hostname, current working directory, and OS username, URL-encodes them, and sends them via an HTTP GET request to a hardcoded Interactsh out-of-band callback subdomain at fpvbsifkklbmklusmxby2405wa7x7x5bf.oast.fun. This fires on default install without user interaction and leaks installer host identifiers to an attacker-controlled OOB server, consistent with a dependency-confusion reconnaissance beacon.

Installing the package or importing the module exfiltrates basic information about the host, and the package has no other purpose.

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Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.

Campaign: GENERIC-standard-pypi-install-pentest

Reasons (based on the campaign):

 - The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.

 - The package overrides the install command in setup.py to execute malicious code during installation.

## What should I do about MAL-2026-13619?

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-2026-13619 is a malicious package: atlas-internal (PyPI). 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-2026-13619/ (Markdown: https://insights.sbomify.com/MAL-2026-13619/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13619

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13619/
Summaries are generated and may contain mistakes; the official description above is the record.