MAL-2026-2291

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/pychatz/MAL-2026-2291.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-2291
Published
2026-03-29T13:50:56Z
Modified
2026-03-29T14:32:08.754640Z
Summary
Malicious code in pychatz (PyPI)
Details

-= Per source details. Do not edit below this line.=-

Source: kam193 (adc76f6c0051f3b8b31b378b6b6078e553750338e2489de9de83315bea349657)

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.

Database specific 
{
    "malicious-packages-origins": [
        {
            "modified_time": "2026-03-29T13:50:56.203848Z",
            "versions": [
                "1.0.0",
                "1.0.1"
            ],
            "sha256": "adc76f6c0051f3b8b31b378b6b6078e553750338e2489de9de83315bea349657",
            "id": "pypi/GENERIC-standard-pypi-install-pentest/pychatz",
            "source": "kam193",
            "import_time": "2026-03-29T14:15:26.650961448Z"
        }
    ]
}
References
Credits

Affected packages

PyPI / pychatz

Package

Name
pychatz
View open source insights on deps.dev
Purl
pkg:pypi/pychatz

Affected ranges

Affected versions

1.*
1.0.0
1.0.1

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/pychatz/MAL-2026-2291.json"