MAL-2026-16407

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/poly-check-b/MAL-2026-16407.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-16407
Published
2026-09-22T18:41:04Z
Modified
2026-09-22T19:00:03Z
Summary
Malicious code in poly-check-b (PyPI)
Details

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

Source: kam193 (0e03276b0825e5aa683a1edd8c9a7f9947888cd03cde8c5351895a0fa3c2fba6)

During installation, the package attempts to silently execute code. In analyzed versions, the payload file was missing.

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

Campaign: 2026-09-snap-queue

Reasons (based on the campaign):

  • The package overrides the install command in setup.py to execute malicious code during installation.
Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "pypi/2026-09-snap-queue/poly-check-b",
            "import_time":  "2026-09-22T18:44:15.285019518Z",
            "modified_time":  "2026-09-22T18:41:04.755393Z",
            "sha256":  "0e03276b0825e5aa683a1edd8c9a7f9947888cd03cde8c5351895a0fa3c2fba6",
            "source":  "kam193",
            "versions":  [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

PyPI / poly-check-b

Package

Name
poly-check-b
View open source insights on deps.dev
Purl
pkg:pypi/poly-check-b

Affected ranges

Affected versions

1.*
1.0.0

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/poly-check-b/MAL-2026-16407.json"