MAL-2026-18772

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/parseyaml/MAL-2026-18772.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-18772
Published
2026-11-08T21:45:25Z
Modified
2026-11-08T22:45:03Z
Summary
Malicious code in parseyaml (PyPI)
Details

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

Source: kam193 (21f0c643e1ed1b11c56bfdd5f7567b2c0172924c227206b8ab9e4210918c6ee3)

In this campaign, remote code is executed via a dependency pretending to be a YAML loader but embedding a special loader executing code from a provided file. During analysis, the code was just a stub.

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

Campaign: 2026-11-parseyaml

Reasons (based on the campaign):

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

  • Downloads and executes a remote malicious script.

Database specific 
{
    "iocs": {
        "urls": [
            "https://plainraw.com/raw/99b69bda4246"
        ]
    },
    "malicious-packages-origins": [
        {
            "id": "pypi/2026-11-parseyaml/parseyaml",
            "import_time": "2026-11-08T22:36:34.682518859Z",
            "modified_time": "2026-11-08T21:45:25.933688Z",
            "sha256": "21f0c643e1ed1b11c56bfdd5f7567b2c0172924c227206b8ab9e4210918c6ee3",
            "source": "kam193",
            "versions": [
                "1.2.0"
            ]
        }
    ]
}
References
Credits

Affected packages

PyPI / parseyaml

Package

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

Affected ranges

Affected versions

1.*
1.2.0

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/parseyaml/MAL-2026-18772.json"