Description
Part of the "Hades" wave of the Shai-Hulud supply-chain campaign. On 2026-06-08,
malicious phantom releases of mflux-streamlit 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 | mflux-streamlit | 0.0.3, 0.0.4 | — | PYSEC-2026-582 |
References
- https://inspector.pypi.io/project/mflux-streamlit/0.0.3/packages/55/aa/ed575e2fa490de397e5d5c017b1093c8439f6718db903f0fc2d5300ae5c9/mflux_streamlit-0.0.3-py3-none-any.whl/mflux_streamlit-setup.pth evidence
- https://inspector.pypi.io/project/mflux-streamlit/0.0.4/packages/59/7d/442dea3530fbfceaee95cf549bbc668cdba6d317e2ede244a2fd327f79ec/mflux_streamlit-0.0.4-py3-none-any.whl//mflux_streamlit-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