MAL-2026-5167

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/jules-test-utils/MAL-2026-5167.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-5167
Published
2026-06-02T13:36:59Z
Modified
2026-06-03T05:15:55.856029460Z
Summary
Malicious code in jules-test-utils (PyPI)
Details

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

Source: kam193 (30c3ca1fa1b7237661d28aada477f7316b7e696a55e2c92c4dee200f291140f4)

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": [
        {
            "import_time": "2026-06-02T14:48:51.523071191Z",
            "versions": [
                "0.1.0"
            ],
            "sha256": "30c3ca1fa1b7237661d28aada477f7316b7e696a55e2c92c4dee200f291140f4",
            "id": "pypi/GENERIC-standard-pypi-install-pentest/jules-test-utils",
            "source": "kam193",
            "modified_time": "2026-06-02T13:38:26.722385Z"
        },
        {
            "import_time": "2026-06-03T05:12:27.859958497Z",
            "versions": [
                "0.1.0"
            ],
            "sha256": "41fd0e6db7d85f546b9b1ffa8f7d968eed5340216f44970a8dfc785e85a5191b",
            "id": "pypi/2026-06-jules-test-utils/jules-test-utils",
            "source": "kam193",
            "modified_time": "2026-06-03T03:33:05.458941Z"
        }
    ]
}
References
Credits

Affected packages

PyPI / jules-test-utils

Package

Name
jules-test-utils
View open source insights on deps.dev
Purl
pkg:pypi/jules-test-utils

Affected ranges

Affected versions

0.*
0.1.0

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/jules-test-utils/MAL-2026-5167.json"