{"id":"MAL-2026-18096","summary":"Malicious code in workalender (PyPI)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (bb4f2824499fd64a22d9dfdb23c454bbb8797422f5281fdd5f454ea64095853a)\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","modified":"2026-10-20T14:30:03.703176593Z","published":"2026-10-20T13:36:11Z","database_specific":{"malicious-packages-origins":[{"source":"kam193","versions":["17.1.0.dev0"],"id":"pypi/GENERIC-standard-pypi-install-pentest/workalender","import_time":"2026-10-20T14:18:32.482923489Z","modified_time":"2026-10-20T13:36:14.492931Z","sha256":"bb4f2824499fd64a22d9dfdb23c454bbb8797422f5281fdd5f454ea64095853a"}]},"references":[{"type":"WEB","url":"https://bad-packages.kam193.eu/pypi/package/workalender"}],"affected":[{"package":{"name":"workalender","ecosystem":"PyPI","purl":"pkg:pypi/workalender"},"versions":["17.1.0.dev0"],"database_specific":{"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/workalender/MAL-2026-18096.json"}}],"schema_version":"1.9.0","credits":[{"name":"Kamil Mańkowski (kam193)","contact":["https://github.com/kam193","https://bad-packages.kam193.eu/"],"type":"REPORTER"}]}