MAL-2026-18689

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/loader-utils-kit/MAL-2026-18689.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-18689
Published
2026-10-26T00:00:00Z
Modified
2026-11-05T05:15:05Z
Summary
Malicious code in loader-utils-kit (npm)
Details

loader-utils-kit ships lib/contract.js, byte-identical to the pino-testkit payload: an obfuscated module that decodes and evaluates code at load. It is a new name for the pino-testkit (MAL-2026-16484) campaign; the file hashes below match that record's evidence. The package presents itself as an ordinary utility, so the code runs on import or install without the user knowing.

Database specific 
{
    "iocs": {
        "domains": [],
        "files": [
            {
                "digests": {
                    "sha256": "c6a9028513792f288fec1d7c217c55d9541d96d436cb119ef0553c3fd49d6c41"
                },
                "paths": [
                    "lib/contract.js"
                ]
            }
        ],
        "ips": [],
        "urls": []
    }
}
References
Credits

Affected packages

npm / loader-utils-kit

Package

Name
loader-utils-kit
View open source insights on deps.dev
Purl
pkg:npm/loader-utils-kit

Affected ranges

Affected versions

4.*
4.2.1
4.3.5

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/loader-utils-kit/MAL-2026-18689.json"