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PYSEC-2026-584

Malicious code in rlask (PyPI)

Details

Part of the "Hades" wave of the Shai-Hulud supply-chain campaign. On 2026-06-08, malicious phantom releases of rlask 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 attempts self-propagation. This entry is a summary; behavior may not be fully characterized here. See the linked references for detailed analysis and indicators of compromise.

Are you affected?

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Affected packages

PyPI / rlask

No fixed version published yet for rlask (pip). Pin to a known-safe version or switch to an alternative.

References

https://inspector.pypi.io/project/rlask/3.1.7/packages/0e/bd/825d4780b45c1a963f4c8b8687d8ca0abf699d25beac93ca4b86403fbbcf/rlask-3.1.7-py3-none-any.whl//rlask-setup.pth [EVIDENCE]
https://www.endorlabs.com/learn/shai-hulud-hades-wave-hits-six-pypi-bioinformatics-packages [ARTICLE]
https://www.stepsecurity.io/blog/the-hades-campaign-pypi-packages [ARTICLE]