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OpenAdvisories
Malicious MAL-2025-191475

atlassian-exp

PyPI package · versions 99.0.0

Reported Nov 26, 2025 · Updated Dec 3, 2025

If this package is installed

Remove it, treat the machine (or CI runner) as compromised, and rotate every secret, token and key it could access — from a different, clean machine.

Details

Source: kam193 (802483ac3ec3749092037040a0a50ed9fa329232a832ac15fd5a0c692c42a9fd)
Installing the package or importing the module exfiltrates basic information about the host, and the package has no other purpose.

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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.

Source: ossf-package-analysis (a8eff0a6a170a0f178577774f1e72d4ea5cec1f7dc16b59d8d30c581f5706fce)
The OpenSSF Package Analysis project identified 'atlassian-exp' @ 99.0.0 (pypi) as malicious.

It is considered malicious because:

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