MAL-2026-16016

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/cv-train/MAL-2026-16016.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-16016
Published
2026-09-07T19:15:04Z
Modified
2026-09-08T20:45:08Z
Summary
Malicious code in cv-train (PyPI)
Details

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

Source: amazon-inspector (3e63e889d2bfc807902ef5bcd86b6d65b95272587726dda61e4efb63d461fc3b)

setup.py defines a phone_home() function invoked at module top level, so it runs during pip install. The function collects the machine hostname, username, current working directory, and the path of any discovered pip.conf, then transmits these values to a hardcoded webhook.site callback via both a DNS lookup and a plaintext HTTP GET to http://webhook.site/2271fec9-1e0d-4a8c-a1c9-b5b0cb9d2b04/cv-train?pkg=...&host=...&user=...&cwd=...&pip_conf=.... The shipped Python module itself is an empty stub; the package's metadata and print statements advertise it as a dependency-confusion proof of concept targeting the name 'cv-train', so any environment with an internal package of that name and a misconfigured index resolution would install this beacon in place of the intended dependency.

Source: kam193 (291eeeae57d4bc439348ef96b08581d69e1160508cc156acfcd8d74b94ead981)

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":  [
        {
            "id":  "pypi/GENERIC-standard-pypi-install-pentest/cv-train",
            "import_time":  "2026-09-07T19:38:28.521779276Z",
            "modified_time":  "2026-09-07T19:15:04.089261Z",
            "sha256":  "291eeeae57d4bc439348ef96b08581d69e1160508cc156acfcd8d74b94ead981",
            "source":  "kam193",
            "versions":  [
                "0.0.5",
                "99.0.0"
            ]
        },
        {
            "id":  "IN-MAL-2026-019714",
            "import_time":  "2026-09-08T20:38:59.405502753Z",
            "modified_time":  "2026-09-08T20:23:09Z",
            "sha256":  "3e63e889d2bfc807902ef5bcd86b6d65b95272587726dda61e4efb63d461fc3b",
            "source":  "amazon-inspector",
            "versions":  [
                "0.0.5"
            ]
        }
    ]
}
References
Credits

Affected packages

PyPI / cv-train

Package

Name
cv-train
View open source insights on deps.dev
Purl
pkg:pypi/cv-train

Affected ranges

Affected versions

0.*
0.0.5
99.*
99.0.0

Database specific

cwes 
[
    {
        "cweId":  "CWE-506",
        "description":  "The product contains code that appears to be malicious in nature.",
        "name":  "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files":  [
        {
            "path":  "setup.py",
            "sha256":  "0164ab9a8e8ef03dd2f238e47b23fdb579f1088f1c0231b55f9c4bca5e7f8d71",
            "tlsh":  "e241a57288502e6ad7d3a4c428661048326bec176e957c7c32cc43844fad7b7d6f175a"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "cv_train-0.0.5-py3-none-any.whl",
            "hashes":  {
                "blake2b_256":  "b7fdf72bca952ec1a38b1abc945b5bd36d28b64af4473bf47ef41e23c553e0d6",
                "md5":  "25b754e0306c79fd5afdba6118badc7d",
                "sha256":  "209a4839fe9c33aae1bf6e3d3293c0bda13d1a59565c6f5480a8d3ac39d28655"
            }
        },
        {
            "filename":  "cv_train-0.0.5.tar.gz",
            "hashes":  {
                "blake2b_256":  "68b13a0e1e561ec6bac00612f17553e4a598bbce46913597b5adce0eb72b517e",
                "md5":  "8412abb88c2c08bd6054fa25b00dcc47",
                "sha256":  "ba8921f4958e7ca8aee4a7b2b2786c0fcb598310fe66161a754137e873821542"
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/cv-train/MAL-2026-16016.json"