MAL-2026-1263

    Dashboard / Malicious Package / MAL-2026-1263

    MAL-2026-1263

    Published: 6 Mar 2026Last Modified: 6 Mar 2026

    Summary: Malicious code in python-module-installer (PyPI)

    Details: Source: kam193 (61bfa181c5afb9e33e0d529138c813fc05d8130062182d9d1a5cb4ef9c8da0ea) The package clones a legitimate webdavclient3 library and modifies it to be an installer utility. During installation, the package exfiltrates the current working directory to a remote WebDAV server or Telegram Bot. Additionally, the package targets cryptocurrency operations in another suspicious project, https://github.com/fewcatltd/zkSync/ The install_modules() method injects code into two files, which are characteristic for this repository, and causes exfiltrating configuration files during cryptocurrency exchange operations. Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers. Campaign: 2026-03-old-python-module-installer Reasons (based on the campaign): - impersonation - dependency-confusion - files-exfiltration - action-hidden-in-lib-usage - clones-real-package - crypto-related - exfiltration-crypto

    References: https://github.com/Python-source-dev/python-module-installer/commit/f58c60b95e98dc9ae8f0fb03ed8eaa5fa23e14cf, https://github.com/Python-source-dev/python-module-installer, https://github.com/python-requirements/requirements, https://github.com/fewcatltd/zkSync/, https://bad-packages.kam193.eu/pypi/package/python-module-installer

    Affected packages

    Package

    Name: python-module-installer

    Purl: pkg:pypi/python-module-installer

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    3.15.6
    3.15.7
    3.15.8
    3.15.9
    3.15.10
    MAL-2026-1263 | CVE-DB