MAL-2026-5684

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/jec/MAL-2026-5684.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-5684
Published
2026-06-12T13:07:48Z
Modified
2026-06-12T13:45:55.211102442Z
Summary
Malicious code in jec (PyPI)
Details

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

Source: kam193 (cfd390b5ea0fe558bd7f5fd56dec8386148e58d7f8d4b6bba14f8a2aa8b6d323)

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/jec",
            "import_time": "2026-06-12T13:42:38.005408789Z",
            "sha256": "cfd390b5ea0fe558bd7f5fd56dec8386148e58d7f8d4b6bba14f8a2aa8b6d323",
            "source": "kam193",
            "modified_time": "2026-06-12T13:07:48.695077Z",
            "versions": [
                "39.0.1"
            ]
        }
    ]
}
References
Credits

Affected packages

PyPI / jec

Package

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

Affected ranges

Affected versions

39.*
39.0.1

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/jec/MAL-2026-5684.json"