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OpenAdvisories
Unscored PYSEC-2026-579 MAL-2026-5290

Malicious code in cmd2func (PyPI)

Published Jun 29, 2026 · Updated Jun 29, 2026 · Assigned by PYSEC

Description

Part of the "Hades" wave of the Shai-Hulud supply-chain campaign. On 2026-06-08,
malicious phantom releases of cmd2func 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

EcosystemPackageAffectedFixedRecord
PyPI cmd2func 0.2.2, 0.2.3 — PYSEC-2026-579

References