Malicious code in mrbios (PyPI)

Part of the "Hades" wave of the Shai-Hulud supply-chain campaign. On 2026-06-08,malicious phantom releases of mrbios were published to PyPI using stolencredentials. The package executes a bundled JavaScript payload via the Bunruntime on import that harvests and exfiltrates credentials and...

PYSEC-2026-594 Malicious code in mrbios (PyPI)

Part of the "Hades" wave of the Shai-Hulud supply-chain campaign. On 2026-06-08, malicious phantom releases of mrbios were published to PyPI using stolen credentials. The package executes a bundled JavaScript payload via the Bun runtime on import that harvests and exfiltrates credentials and...

Embedded Malicious Code

Overview Affected versions of this package are vulnerable to Embedded Malicious Code. This package contains malicious code associated with the Shai-Hulud / Miasma software supply chain campaign, a large scale operation that has affected numerous packages across open source ecosystems. The malicio...