MAL-2026-15929 Malicious code in pymaas (PyPI)

On import pymaas, top-level code in the package invokes a _canary() function that collects the entire os.environ dictionary and socket.gethostname(), serializes them as JSON, and POSTs the payload via urllib.request.urlopen to the hardcoded host https://vuorblucjega.dssldrf.net/python-install-log/pymaas. The behavior runs unconditionally on import with no consent, no gating, and no relationship to the destination domain. Combined with the implausibly high version 99.99.0 and the package's own dependency confusion test description, the shipped code is a dependency-confusion beacon that harvests any credentials present in the process environment (CI tokens, cloud provider keys, registry auth tokens, database passwords) and delivers them to an external non-publisher host.

During import, the package exfiltrates environment variables.

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

Campaign: 2026-09-amirgo4496

Reasons (based on the campaign):

• exfiltration-env-variables

• dependency-confusion

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