MAL-2026-3692

    Dashboard / Malicious Package / MAL-2026-3692

    MAL-2026-3692

    Published: 12 May 2026Last Modified: 13 May 2026

    Summary: Malicious code in guan (PyPI)

    Details: Source: amazon-inspector (2e04a9a658bc7616e72a5edf276dd049e5b697f2492c46929caf2e01fac95d84) The top-level `src/guan/__init__.py` unconditionally calls `statistics_of_guan_package()` on every `import guan`. That function (in `src/guan/others.py`) opens a raw TCP socket to the hardcoded author-controlled endpoint `socket.guanjihuan.com:12345` and sends a JSON payload containing the installer's MAC address (via `uuid.getnode()`), the `guan` package version, and timestamp. There is no opt-out, no documentation of this behavior in README/PKG-INFO, and no user consent. This constitutes silent collection of a stable hardware identifier from every machine that imports the package and transmits it to an author-controlled server — an installer-side data exfiltration pattern, not merely author-side self-harm. While the payload is narrow (MAC + version + time), MAC addresses are persistent hardware identifiers suitable for tracking, correlation, and deanonymization of developer/build machines.

    References: https://pypi.org/project/guan/0.1.171/, https://pypi.org/project/guan/0.1.100/

    Affected packages

    Package

    Name: guan

    Purl: pkg:pypi/guan

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    0.1.171
    0.1.100
    MAL-2026-3692 | CVE-DB