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OpenAdvisories
Malicious MAL-2026-16407

poly-check-b

PyPI package · versions 1.0.0

Reported Sep 22, 2026 · Updated Sep 22, 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 (0e03276b0825e5aa683a1edd8c9a7f9947888cd03cde8c5351895a0fa3c2fba6)
During installation, the package attempts to silently execute code. In analyzed versions, the payload file was missing.

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

Campaign: 2026-09-snap-queue

Reasons (based on the campaign):

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