MAL-2026-31 Malicious code in telstra (PyPI)

Malicious package Published
Package
telstra
Registry
PyPI

What is MAL-2026-31?

MAL-2026-31 is a malicious package in telstra, published on 3 Jan 2026.

Official description

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.

The OpenSSF Package Analysis project identified 'telstra' @ 2.0.1 (pypi) as malicious.

It is considered malicious because:

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

What should I do about MAL-2026-31?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

Sources

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