{"id":"MAL-2026-16407","summary":"Malicious code in poly-check-b (PyPI)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (0e03276b0825e5aa683a1edd8c9a7f9947888cd03cde8c5351895a0fa3c2fba6)\nDuring installation, the package attempts to silently execute code. In analyzed versions, the payload file was missing.\n\n\n---\n\nCategory: MALICIOUS - The campaign has clearly malicious intent, like infostealers.\n\n\nCampaign: 2026-09-snap-queue\n\n\nReasons (based on the campaign):\n\n\n - The package overrides the install command in setup.py to execute malicious code during installation.\n","modified":"2026-09-22T19:00:03.995357241Z","published":"2026-09-22T18:41:04Z","database_specific":{"malicious-packages-origins":[{"sha256":"0e03276b0825e5aa683a1edd8c9a7f9947888cd03cde8c5351895a0fa3c2fba6","source":"kam193","versions":["1.0.0"],"id":"pypi/2026-09-snap-queue/poly-check-b","import_time":"2026-09-22T18:44:15.285019518Z","modified_time":"2026-09-22T18:41:04.755393Z"}]},"references":[{"type":"WEB","url":"https://bad-packages.kam193.eu/pypi/package/poly-check-b"}],"affected":[{"package":{"name":"poly-check-b","ecosystem":"PyPI","purl":"pkg:pypi/poly-check-b"},"versions":["1.0.0"],"database_specific":{"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/poly-check-b/MAL-2026-16407.json"}}],"schema_version":"1.9.0","credits":[{"name":"Kamil Mańkowski (kam193)","contact":["https://github.com/kam193","https://bad-packages.kam193.eu/"],"type":"REPORTER"}]}