crc32fast

{"modified":"2026-02-14T14:13:09Z","published":"2026-02-14T13:26:41Z","schema_version":"1.7.4","id":"MAL-2026-902","summary":"Malicious code in crc32fast (PyPI)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (3b89c674974bf58c7388a27bf1c6ea954a890de45a3e9ba4830c1eada3a3ea6a)\nInstalling the package or importing the module exfiltrates basic information about the host, and the package has no other purpose.\n\n\n---\n\nCategory: 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.\n\n\nCampaign: GENERIC-standard-pypi-install-pentest\n\n\nReasons (based on the campaign):\n\n\n - The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.\n\n\n - The package overrides the install command in setup.py to execute malicious code during installation.\n\n## Source: ossf-package-analysis (01c9a259f7b88e992aee84db09b728b15f74a517857ab5b3aaa16f725a9debbd)\nThe OpenSSF Package Analysis project identified 'crc32fast' @ 1.0.99 (pypi) as malicious.\n\nIt is considered malicious because:\n\n- The package communicates with a domain associated with malicious activity.\n\n- The package executes one or more commands associated with malicious behavior.\n","affected":[{"package":{"ecosystem":"PyPI","name":"crc32fast"},"versions":["1.0.99"]}],"references":[{"type":"WEB","url":"https://bad-packages.kam193.eu/pypi/package/crc32fast"}],"credits":[{"name":"Kamil Mańkowski (kam193)","type":"REPORTER","contact":["https://github.com/kam193","https://bad-packages.kam193.eu/"]},{"name":"OpenSSF: Package Analysis","type":"FINDER","contact":["https://github.com/ossf/package-analysis","https://openssf.slack.com/channels/package_analysis"]}],"database_specific":{"malicious-packages-origins":[{"source":"ossf-package-analysis","sha256":"01c9a259f7b88e992aee84db09b728b15f74a517857ab5b3aaa16f725a9debbd","import_time":"2026-02-14T13:47:54.888067435Z","modified_time":"2026-02-14T13:26:41Z","versions":["1.0.99"]},{"source":"kam193","sha256":"3b89c674974bf58c7388a27bf1c6ea954a890de45a3e9ba4830c1eada3a3ea6a","import_time":"2026-02-14T14:11:25.333664625Z","id":"pypi/GENERIC-standard-pypi-install-pentest/crc32fast","modified_time":"2026-02-14T13:35:17.052646Z","versions":["1.0.99"]}]}}