MAL-2025-4257

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/vfsrcetest/MAL-2025-4257.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2025-4257
Published
2024-07-26T16:53:30Z
Modified
2026-03-19T12:57:53.675994Z
Summary
Malicious code in vfsrcetest (PyPI)
Details

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

Source: kam193 (7df901b4edfbd807ba2046d52cb63fb5c952df8c0bb464d1faff3f3732680ffc)

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.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "RLMA-2025-02615",
            "import_time": "2025-05-22T14:06:39.189820591Z",
            "sha256": "cf6dde6193ab9d2066190523347c2f9cd6d6c7e8f5c702922bcebf3ae1426f99",
            "source": "reversing-labs",
            "modified_time": "2025-05-22T12:33:55Z",
            "versions": [
                "1.1"
            ]
        },
        {
            "id": "pypi/GENERIC-standard-pypi-install-pentest/vfsrcetest",
            "ranges": [
                {
                    "type": "ECOSYSTEM",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "import_time": "2025-12-02T22:30:56.489721926Z",
            "sha256": "866e6ebf7fed17a0509cca94af21d8d507c0da055978dcf42f14ea15786ff87b",
            "source": "kam193",
            "modified_time": "2024-07-26T16:53:30Z"
        },
        {
            "id": "pypi/GENERIC-standard-pypi-install-pentest/vfsrcetest",
            "ranges": [
                {
                    "type": "ECOSYSTEM",
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ]
                }
            ],
            "import_time": "2025-12-02T23:07:19.671426265Z",
            "sha256": "7df901b4edfbd807ba2046d52cb63fb5c952df8c0bb464d1faff3f3732680ffc",
            "source": "kam193",
            "modified_time": "2024-07-26T16:53:30Z"
        },
        {
            "id": "pypi/GENERIC-standard-pypi-install-pentest/vfsrcetest",
            "import_time": "2025-12-10T21:38:58.766265032Z",
            "sha256": "07b33af987a8bbb9a871da151ff6e4b92990263bfc2ce72837d7cc8773206fea",
            "source": "kam193",
            "modified_time": "2024-07-26T16:53:30Z",
            "versions": [
                "1.1"
            ]
        },
        {
            "id": "RLUA-2026-00892",
            "import_time": "2026-03-19T12:20:40.794891949Z",
            "sha256": "1da41ddf90f0e97842b8dbff15c37b912fbd251e3ecf32f4f08415d68dad2e99",
            "source": "reversing-labs",
            "modified_time": "2026-03-18T12:20:13Z"
        }
    ]
}
References
Credits

Affected packages

PyPI / vfsrcetest

Package

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

Affected ranges

Affected versions

1.*
1.1

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/vfsrcetest/MAL-2025-4257.json"