MAL-2026-1987

    Dashboard / Malicious Package / MAL-2026-1987

    MAL-2026-1987

    Published: 20 Mar 2026Last Modified: 20 Mar 2026

    Summary: Malicious code in composer-dev (PyPI)

    Details: Source: kam193 (7be3393e5cd932abe1668adaa58f526e25b1a6ab2ef4945eadeb60e68493c7ef) Installing the package or importing the module exfiltrates basic information about the host, and the package has no other purpose. Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities. Campaign: GENERIC-standard-pypi-install-pentest Reasons (based on the campaign): - The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk. - The package overrides the install command in setup.py to execute malicious code during installation.

    References: https://bad-packages.kam193.eu/pypi/package/composer-dev

    Affected packages

    Package

    Name: composer-dev

    Purl: pkg:pypi/composer-dev

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    9.9.9