pypi · Malicious package advisory
Malwarecrc32fast
MAL-2026-902
Malicious code in crc32fast (PyPI)
Details
--- _-= Per source details. Do not edit below this line.=-_ ## Source: kam193 (3b89c674974bf58c7388a27bf1c6ea954a890de45a3e9ba4830c1eada3a3ea6a) 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. ## Source: ossf-package-analysis (01c9a259f7b88e992aee84db09b728b15f74a517857ab5b3aaa16f725a9debbd) The OpenSSF Package Analysis project identified 'crc32fast' @ 1.0.99 (pypi) as malicious. It is considered malicious because: - The package communicates with a domain associated with malicious activity. - The package executes one or more commands associated with malicious behavior.
Compromised versions (1)
- 1.0.99
Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.