MAL-2025-5847 Malicious code in vtk-osmesa (PyPI)

During the installation, sensitive information are exfiltrated (incl. env variables)

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2025-07-vtk-osmesa

Reasons (based on the campaign):

• exfiltration-env-variables

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

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

The OpenSSF Package Analysis project identified 'vtk-osmesa' @ 900.548.735 (pypi) as malicious.

It is considered malicious because:

• The package communicates with a domain associated with malicious activity.

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