Description
Part of the "Hades" wave of the Shai-Hulud supply-chain campaign. On 2026-06-08,
malicious phantom releases of pantheon-toolsets 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 | pantheon-toolsets | 0.5.5, 0.5.6 | — | PYSEC-2026-608 |
References
- https://inspector.pypi.io/project/pantheon-toolsets/0.5.6/packages/17/e8/4ce8350f00f458e0ef34e08459e22dba09859844dc37b93d6682f5b1c65c/pantheon_toolsets-0.5.6-py3-none-any.whl//pantheon_toolsets-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