MAL-2026-1036

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/uitil/MAL-2026-1036.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-1036
Published
2026-01-16T21:32:25Z
Modified
2026-02-26T00:55:27.149541Z
Summary
Malicious code in uitil (PyPI)
Details

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

Source: kam193 (ff0b75197d8e7cd361d61461260811fba8920c54b8538cb5f21ec2fc1c885ec3)

The package implements an undocumented way to execute code hidden in image files, and a function that searches for images in the current directory and attempts to execute the code.

It's used in the GitHub repository https://github.com/OR-6/PassCheck/blob/main/main.py#L190 to silently execute the command hidden in the image https://github.com/OR-6/PassCheck/blob/b09b3f1ec5d7345c614b1d956840ee2774f7131b/demo.png when the user interacts with the repository code. The decrypted command attempted to download and execute code from hxxps://or-6.github[.]io, which at the time of analysis didn't host any code.

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

Campaign: 2026-01-uitil

Reasons (based on the campaign):

  • typosquatting

  • steganography

  • The malicious code is intentionally included in a dependency of the package

  • action-hidden-in-lib-usage

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

Database specific 
{
    "iocs": {
        "domains": [
            "or-6.github.io"
        ],
        "urls": [
            "https://github.com/OR-6/PassCheck/",
            "https://or-6.github.io"
        ]
    },
    "malicious-packages-origins": [
        {
            "sha256": "ff0b75197d8e7cd361d61461260811fba8920c54b8538cb5f21ec2fc1c885ec3",
            "id": "pypi/2026-01-uitil/uitil",
            "source": "kam193",
            "modified_time": "2026-01-16T21:32:25.526282Z",
            "versions": [
                "0.1.4",
                "0.1.5"
            ],
            "import_time": "2026-02-25T23:42:59.090660365Z"
        },
        {
            "sha256": "243b442528547767d2f56c9ced8cb1b6791997d176602ecc4725194f684fdb05",
            "id": "pypi/2026-01-uitil/uitil",
            "source": "kam193",
            "modified_time": "2026-01-16T21:32:25.526282Z",
            "versions": [
                "0.1.4",
                "0.1.5"
            ],
            "import_time": "2026-02-26T00:31:51.239635054Z"
        }
    ]
}
References
Credits

Affected packages

PyPI / uitil

Package

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

Affected ranges

Affected versions

0.*
0.1.4
0.1.5

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/uitil/MAL-2026-1036.json"