{"id":"MAL-2025-6526","summary":"Malicious code in is-number-object (PyPI)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (60c891b7eb9d0f5a8ca04cb59f7b91bac36fbcc7df40fcf44b9a46f8c969daf3)\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":"2026-03-19T12:54:11.893472Z","published":"2024-07-26T16:53:30Z","database_specific":{"malicious-packages-origins":[{"import_time":"2025-08-01T10:07:11.93381879Z","modified_time":"2025-07-31T19:15:22Z","id":"RLMA-2025-03619","versions":["1.0.8"],"source":"reversing-labs","sha256":"c0658c6b882b62dbc0951bb4e3b29c2108210a21b29ee38ffd59db424e1f6dc5"},{"import_time":"2025-12-02T22:30:56.129009596Z","modified_time":"2024-07-26T16:53:30Z","id":"pypi/GENERIC-standard-pypi-install-pentest/is-number-object","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"source":"kam193","sha256":"3c02be6e910db26635ec0b017be94b6c09973e53e8b31848aa62bd6718b1f047"},{"import_time":"2025-12-02T23:07:19.316500197Z","modified_time":"2024-07-26T16:53:30Z","id":"pypi/GENERIC-standard-pypi-install-pentest/is-number-object","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"source":"kam193","sha256":"60c891b7eb9d0f5a8ca04cb59f7b91bac36fbcc7df40fcf44b9a46f8c969daf3"},{"import_time":"2025-12-10T21:38:58.449107345Z","modified_time":"2024-07-26T16:53:30Z","id":"pypi/GENERIC-standard-pypi-install-pentest/is-number-object","versions":["1.0.8"],"source":"kam193","sha256":"c0301fe2cd588be3a2840800b503be975c9bcf64cf26ddc65d4b26ef81a1e90d"},{"import_time":"2026-03-19T12:19:55.587321191Z","modified_time":"2026-03-18T12:15:08Z","id":"RLUA-2026-00432","source":"reversing-labs","sha256":"f28696718b3ca41a2e870fa4824b1f03e693e57fc77838dd633cdd49ecd95688"}]},"references":[{"type":"WEB","url":"https://bad-packages.kam193.eu/pypi/package/is-number-object"}],"affected":[{"package":{"name":"is-number-object","ecosystem":"PyPI","purl":"pkg:pypi/is-number-object"},"versions":["1.0.8"],"database_specific":{"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/is-number-object/MAL-2025-6526.json"}}],"schema_version":"1.7.5","credits":[{"name":"Kamil Mańkowski (kam193)","contact":["https://github.com/kam193","https://bad-packages.kam193.eu/"]},{"name":"Kamil Mańkowski (kam193)","contact":["https://github.com/kam193","https://bad-packages.kam193.eu/"],"type":"REPORTER"},{"name":"ReversingLabs","contact":["https://www.reversinglabs.com"],"type":"FINDER"}]}