MAL-2026-126

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/codefrequencychecker/MAL-2026-126.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-126
Published
2026-01-07T10:05:21Z
Modified
2026-01-07T10:56:00.500354Z
Summary
Malicious code in codefrequencychecker (PyPI)
Details

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

Source: kam193 (4202ead7b36e01a039c10a9379f617de02b50d5a69d5923652cfafb6f22067b6)

Package exfiltrates browser cookies and passwords, and starts a Telegram bot allowing re-exfiltrating later.

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

Campaign: 2026-01-codefrequencychecker

Reasons (based on the campaign):

  • exfiltration-browser-data

  • A Telegram webhook is used to send collected data.

  • infostealer

Database specific 
{
    "malicious-packages-origins": [
        {
            "source": "kam193",
            "id": "pypi/2026-01-codefrequencychecker/codefrequencychecker",
            "versions": [
                "0.0.1",
                "0.0.2",
                "0.0.3",
                "0.0.5",
                "0.0.7"
            ],
            "import_time": "2026-01-07T10:42:27.223837213Z",
            "sha256": "4202ead7b36e01a039c10a9379f617de02b50d5a69d5923652cfafb6f22067b6",
            "modified_time": "2026-01-07T10:05:21.320568Z"
        }
    ]
}
References
Credits

Affected packages

PyPI / codefrequencychecker

Package

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

Affected ranges

Affected versions

0.*
0.0.1
0.0.2
0.0.3
0.0.5
0.0.7

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/codefrequencychecker/MAL-2026-126.json"