MAL-2026-905 Malicious code in marshmellows (PyPI)

Package is a typosquatting or dependency confusion attempt with a low-harm local-only action, like leaving a flag file.

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-local-typosquatting

Reasons (based on the campaign):

• dependency-confusion

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

• typosquatting

The OpenSSF Package Analysis project identified 'marshmellows' @ 1.0.0 (pypi) as malicious.

It is considered malicious because:

• The package executes one or more commands associated with malicious behavior.