{"id":"MAL-2026-18627","summary":"Malicious code in msgpackrpc (PyPI)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (9747a902bd61a745ec9c8f569f57417303f828b441c3e4e8c95101adf1498d13)\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":"2026-11-04T16:45:04.332052887Z","published":"2026-11-04T16:11:42Z","database_specific":{"malicious-packages-origins":[{"sha256":"9747a902bd61a745ec9c8f569f57417303f828b441c3e4e8c95101adf1498d13","source":"kam193","versions":["0.0.0","0.1.0"],"id":"pypi/GENERIC-standard-pypi-install-pentest/msgpackrpc","import_time":"2026-11-04T16:37:36.802736375Z","modified_time":"2026-11-04T16:11:42.068096Z"}]},"references":[{"type":"WEB","url":"https://bad-packages.kam193.eu/pypi/package/msgpackrpc"}],"affected":[{"package":{"name":"msgpackrpc","ecosystem":"PyPI","purl":"pkg:pypi/msgpackrpc"},"versions":["0.0.0","0.1.0"],"database_specific":{"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/msgpackrpc/MAL-2026-18627.json"}}],"schema_version":"1.9.2","credits":[{"name":"Kamil Mańkowski (kam193)","contact":["https://github.com/kam193","https://bad-packages.kam193.eu/"],"type":"REPORTER"}]}