MAL-2026-3426

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/mpkg123/MAL-2026-3426.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-3426
Published
2026-05-11T10:36:26Z
Modified
2026-05-11T12:16:15.764705Z
Summary
Malicious code in mpkg123 (PyPI)
Details

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

Source: kam193 (df9e0498d827adeb16ea11e4a1137133d2124f039942b776f7ac098a257cd164)

If executed as a module, the obfuscated code collects and exfiltrates sensitive data, including passwords saved in a browser.

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2026-05-old-mpkg123

Reasons (based on the campaign):

  • infostealer

  • obfuscation

  • A Telegram webhook is used to send collected data.

  • exfiltration-browser-data

Database specific 
{
    "malicious-packages-origins": [
        {
            "source": "kam193",
            "id": "pypi/2026-05-old-mpkg123/mpkg123",
            "versions": [
                "0.0.0"
            ],
            "import_time": "2026-05-11T12:04:26.351062288Z",
            "modified_time": "2026-05-11T10:36:27.077568Z",
            "sha256": "df9e0498d827adeb16ea11e4a1137133d2124f039942b776f7ac098a257cd164"
        }
    ]
}
References
Credits

Affected packages

PyPI / mpkg123

Package

Name
mpkg123
View open source insights on deps.dev
Purl
pkg:pypi/mpkg123

Affected ranges

Affected versions

0.*
0.0.0

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/mpkg123/MAL-2026-3426.json"