MAL-2026-18343

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/numprint/MAL-2026-18343.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-18343
Published
2026-10-27T16:48:48Z
Modified
2026-10-27T17:30:37Z
Summary
Malicious code in numprint (PyPI)
Details

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

Source: kam193 (ca6ff316077349c92e2d1e5d7c3683a16e6542b952d5c7fc8743efa5d4c80243)

During installation the package starts a background process executing commands provided by the attacker. The C2 communication happens through a GitHub Gist.

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

Campaign: 2026-10-numprint

Reasons (based on the campaign):

  • The package overrides the install command in setup.py to execute malicious code during installation.

  • The package contains code to execute remote commands (probably limited to a specific set) on the victim's machine.

  • rat

Database specific 
{
    "iocs":  {
        "urls":  [
            "https://api.github.com/gists/3775fd9235aa6ef29e96eb96274a0e34"
        ]
    },
    "malicious-packages-origins":  [
        {
            "id":  "pypi/2026-10-numprint/numprint",
            "import_time":  "2026-10-27T17:13:14.404099688Z",
            "modified_time":  "2026-10-27T16:48:48.533873Z",
            "sha256":  "ca6ff316077349c92e2d1e5d7c3683a16e6542b952d5c7fc8743efa5d4c80243",
            "source":  "kam193",
            "versions":  [
                "1.2.0"
            ]
        }
    ]
}
References
Credits

Affected packages

PyPI / numprint

Package

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

Affected ranges

Affected versions

1.*
1.2.0

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/numprint/MAL-2026-18343.json"