MAL-2026-16328

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/catwrestlinghuman/MAL-2026-16328.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-16328
Published
2026-09-21T03:30:19Z
Modified
2026-09-21T04:00:06Z
Summary
Malicious code in catwrestlinghuman (npm)
Details

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

Source: amazon-inspector (6c4045339387526c5db90832687d1691c2caddba3b9cb05006022704bf094653)

package.json declares a postinstall hook node index.js. index.js is a 111KB blob composed exclusively of the JSFuck character set ([]()!+), which decodes at runtime via Function(<decoded string>)() to arbitrary JavaScript. A sibling file extension.js (126KB) uses the same JSFuck encoding, indicating a multi-stage opaque payload. The package has no description, no author, and no dependencies, and ships no readable source — the JSFuck encoding is exclusively an obfuscation technique used to hide executable code from scanners and reviewers. Installing this package causes automatic execution of the opaque payload on the installer's machine during npm install.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-020227",
            "import_time": "2026-09-21T03:46:37.750285258Z",
            "modified_time": "2026-09-21T03:30:19Z",
            "sha256": "6c4045339387526c5db90832687d1691c2caddba3b9cb05006022704bf094653",
            "source": "amazon-inspector",
            "versions": [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / catwrestlinghuman

Package

Name
catwrestlinghuman
View open source insights on deps.dev
Purl
pkg:npm/catwrestlinghuman

Affected ranges

Affected versions

1.*
1.0.0

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "index.js",
            "sha256": "d6451b7f8e22341976a24eb4fc2d387909ee0f8ca29559b04648489491c8742f",
            "tlsh": "c4b32e0e0013b795f697ebdc3da87d9e1b695fdb6ab0da1cb609b2924f1dfb09084011"
        },
        {
            "path": "extension.js",
            "sha256": "2c2cd3c56ba604d42003b09a80efdaa90cf93c2f26d5b53bd859cfea74ae3bae",
            "tlsh": "48c32e0e0013b795f697ebdc3db87d9e1a696fca69b0da1cb609b2925f1dfb0d084011"
        }
    ],
    "package_integrity": [
        {
            "filename": "catwrestlinghuman-1.0.0.tgz",
            "hashes": {
                "sha1": "743d93b78b0aded70e54005ed9a9dae4c69a99ca",
                "sha512_sri": "sha512-6gAXz8oqf8wOTyX/DeZGrgOTihU7WpFbjpjHifqtHA3hPr6OPJrrpBxhkv5PQGFLAPHnOsUm+idCoCmAsa+BGg=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/catwrestlinghuman/MAL-2026-16328.json"