Description
Part of the "Hades" wave of the Shai-Hulud supply-chain campaign. On 2026-06-08,
malicious phantom releases of executor-engine 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 | executor-engine | 0.3.4, 0.3.5 | — | PYSEC-2026-589 |
References
- https://inspector.pypi.io/project/executor-engine/0.3.5/packages/e8/c5/ddb0a3baebdfd3a3a3e3f73dd1f851e94ee263a07720433adc68dc442058/executor_engine-0.3.5-py3-none-any.whl//executor_engine-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