MAL-2026-4355

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/mistral-workflows-plugins-webhook/MAL-2026-4355.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-4355
Published
2026-05-26T02:50:39Z
Modified
2026-05-26T05:01:41.037949443Z
Summary
Malicious code in mistral-workflows-plugins-webhook (PyPI)
Details

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

Source: kam193 (e87825efe9006ca3d435869b276f0d8526a1255ec71ac6e7aa0ea1bb068b6673)

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.

Source: ossf-package-analysis (f1cc2ab2edf3a60cf389b863157610e1ed044ecd04c13654ffae60a9e11e2d3f)

The OpenSSF Package Analysis project identified 'mistral-workflows-plugins-webhook' @ 999.0.0 (pypi) as malicious.

It is considered malicious because:

  • The package communicates with a domain associated with malicious activity.
Database specific 
{
    "malicious-packages-origins": [
        {
            "import_time": "2026-05-26T03:14:17.904986399Z",
            "versions": [
                "999.0.0"
            ],
            "source": "ossf-package-analysis",
            "modified_time": "2026-05-26T02:50:39Z",
            "sha256": "f1cc2ab2edf3a60cf389b863157610e1ed044ecd04c13654ffae60a9e11e2d3f"
        },
        {
            "import_time": "2026-05-26T04:53:39.949835678Z",
            "versions": [
                "999.0.0"
            ],
            "source": "kam193",
            "sha256": "e87825efe9006ca3d435869b276f0d8526a1255ec71ac6e7aa0ea1bb068b6673",
            "modified_time": "2026-05-26T03:27:28.272963Z",
            "id": "pypi/GENERIC-standard-pypi-install-pentest/mistral-workflows-plugins-webhook"
        }
    ]
}
References
Credits

Affected packages

PyPI / mistral-workflows-plugins-webhook

Package

Name
mistral-workflows-plugins-webhook
View open source insights on deps.dev
Purl
pkg:pypi/mistral-workflows-plugins-webhook

Affected ranges

Affected versions

999.*
999.0.0

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/mistral-workflows-plugins-webhook/MAL-2026-4355.json"