GCVE-110-OSM-2026-4794

Advisory PublishedCVSS 8.8/10

Vulnetix · Advisory published May 26, 2026

Malicious package detected. Behaviors: data exfiltration, code execution. Entrypoint: hmacsync/__init__.py (module-import: 47) Payload: hmacsync/_m1.py Secondary files: hmacsync/_m0.py, hmacsync/_m2.py Key findings: - Shell Command Execution in hmacsync/_m1.py: "subprocess.run(" - Shell Command Variable Setup in hmacsync/_m1.py: "windows_sid_powershell() -> str: try: cmd = [ "powers..." - Shell Command Execution in hmacsync/_m5.py: "subprocess.run(" - Silent Process Execution in hmacsync/_m5.py: "stdout=subprocess.DEVNULL" - Brand New Package IOCs: - payloadFileHash: 41a273058d11941cfa9b8276a6ab7d89d49534674466018647d597667c3783a9

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Weaknesses (CWE)

CWE-506Embedded Malicious Code

Risk Scores

CVSS 3.1

8.8/10

High · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Products

Vendor	Product	Versions	Platforms
unknown	hmacsync	all (affected)	—

References

Malicious pypi package: hmacsync

advisory

vendor

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