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OpenAdvisories
Malicious MAL-2026-4166

tarpackage

PyPI package · versions 1.0.0

Reported May 19, 2026 · Updated May 19, 2026

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 (32df873f7d91846104a4637b94b2816fea2023260d81c2ecbc5f3c6d5b6a934a)
The package exfiltrates env variables during installation

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

Campaign: 2026-05-tarpackage

Reasons (based on the campaign):

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

- exfiltration-env-variables

Indicators of compromise

Shown defanged and not clickable. Search any indicator to find other packages using it.

URLs

IP addresses