{"id":"PYSEC-2026-594","summary":"Malicious code in mrbios (PyPI)","details":"Part of the \"Hades\" wave of the Shai-Hulud supply-chain campaign. On 2026-06-08,\nmalicious phantom releases of mrbios were published to PyPI using stolen\ncredentials. The package executes a bundled JavaScript payload (via the Bun\nruntime) on import that harvests and exfiltrates credentials and attempts\nself-propagation. This entry is a summary; behavior may not be fully\ncharacterized here. See the linked references for detailed analysis and\nindicators of compromise.\n","aliases":["MAL-2026-5282"],"modified":"2026-07-01T12:45:04.743953340Z","published":"2026-06-30T21:23:05Z","references":[{"type":"EVIDENCE","url":"https://inspector.pypi.io/project/mrbios/0.1.2/packages/57/fb/c33c8829af52faa727d93f68688a53322e10e5f617c6b26f86f9c9ad35b9/mrbios-0.1.2-py3-none-any.whl//mrbios-setup.pth"},{"type":"ARTICLE","url":"https://www.endorlabs.com/learn/shai-hulud-hades-wave-hits-six-pypi-bioinformatics-packages"},{"type":"ARTICLE","url":"https://www.stepsecurity.io/blog/the-hades-campaign-pypi-pack"}],"affected":[{"package":{"name":"mrbios","ecosystem":"PyPI","purl":"pkg:pypi/mrbios"},"versions":["0.1.1","0.1.2"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/mrbios/PYSEC-2026-594.yaml"}}],"schema_version":"1.7.5"}