MAL-2026-10905

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/win-build-utils/MAL-2026-10905.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-10905
Aliases
  • GHSA-7ffq-88v5-rmwc
Published
2026-07-20T11:04:39Z
Modified
2026-09-01T11:45:05Z
Summary
Malicious code in win-build-utils (npm)
Details

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

Source: amazon-inspector (03bd3facc00c36861223058a572fbaa888d815a06c7b309c44639c544c65f1d9)

The package name suggests a Windows build helper utility, but no concrete behavioral evidence is available to confirm or refute installer-side risk. No exfiltration, install-time fetch, credential access, or other attack-class behavior was observed. The package warrants human review to confirm contents and intent before issuing a public verdict.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "RLMA-2026-05653",
            "import_time": "2026-07-20T13:14:53.790441043Z",
            "modified_time": "2026-07-20T11:04:39Z",
            "sha256": "7f6c85194f2cc39ade690b7b9a94332657b6251b638d8908080bedf5b98d908f",
            "source": "reversing-labs",
            "versions": [
                "1.0.0"
            ]
        },
        {
            "id": "IN-MAL-2026-013032",
            "import_time": "2026-08-05T06:00:33.27134744Z",
            "modified_time": "2026-08-05T05:24:07Z",
            "sha256": "03bd3facc00c36861223058a572fbaa888d815a06c7b309c44639c544c65f1d9",
            "source": "amazon-inspector",
            "versions": [
                "1.0.0"
            ]
        },
        {
            "id": "RLUA-2026-06552",
            "import_time": "2026-09-01T11:38:20.417964332Z",
            "modified_time": "2026-08-24T17:17:13Z",
            "sha256": "26e3dee77c0d7ff1e6dd5b799e65f48cb574e70615a72d3631410e713de15b7d",
            "source": "reversing-labs"
        }
    ]
}
References
Credits

Affected packages

npm / win-build-utils

Package

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

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 
{
    "package_integrity": [
        {
            "filename": "win-build-utils-1.0.0.tgz",
            "hashes": {
                "sha1": "eac5474260e937bbccff8bfcbf2575d0d888841c",
                "sha512_sri": "sha512-ab4OMCFy4pdz5MC7Ea6aK49RMCSbZTiHuPhE+efmgTeDH5XHA8KDd/JmHfmQDRC3Z2vbEocuIc45BSl6L9CraQ=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/win-build-utils/MAL-2026-10905.json"