MAL-2026-1

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/sfnt2woff-zopfli/MAL-2026-1.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-1
Published
2026-01-01T11:16:31Z
Modified
2026-01-01T12:19:13.524861Z
Summary
Malicious code in sfnt2woff-zopfli (PyPI)
Details

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

Source: kam193 (f372716a5cf92b41a37e0d7a83e287a41fcaca77b3cf9a324554c20a86635d8a)

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": [
        {
            "source": "kam193",
            "id": "pypi/GENERIC-standard-pypi-install-pentest/sfnt2woff-zopfli",
            "modified_time": "2026-01-01T11:16:31.574553Z",
            "sha256": "f372716a5cf92b41a37e0d7a83e287a41fcaca77b3cf9a324554c20a86635d8a",
            "versions": [
                "0.0.0",
                "17.0.0"
            ],
            "import_time": "2026-01-01T12:11:42.453176989Z"
        }
    ]
}
References
Credits

Affected packages

PyPI / sfnt2woff-zopfli

Package

Name
sfnt2woff-zopfli
View open source insights on deps.dev
Purl
pkg:pypi/sfnt2woff-zopfli

Affected ranges

Affected versions

0.*
0.0.0
17.*
17.0.0

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/sfnt2woff-zopfli/MAL-2026-1.json"