Description
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.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | rlask | 3.1.3, 3.1.4, 3.1.5, 3.1.6, 3.1.7 | — | PYSEC-2026-584 |
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