MAL-2026-15629

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/mfaatest/MAL-2026-15629.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-15629
Published
2026-08-31T18:03:06Z
Modified
2026-08-31T18:31:21Z
Summary
Malicious code in mfaatest (npm)
Details

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

Source: amazon-inspector (73e4ce261829117e316f9152160cdcb35c6ba66064f631baba1f8d528673b584)

package.json declares dependency node-net-pool with its value set to an arbitrary HTTPS tarball URL (https://limbomail.com/api/attachment/fpwvxc__9DvM.Bjuueu1K2SkBC_KkgATls-oq05UsrNNY/pkg.tgz) rather than a registry version range. On npm install, npm fetches whatever bytes limbomail.com returns and installs them, executing any lifecycle scripts inside the fetched tarball. The source is unpinned, integrity-unchecked, and hosted on a domain unrelated to the package's stated publisher; the content can be swapped at any time by whoever controls that host. The package's own description claims 'zero runtime dependencies', contradicting the presence of this off-registry dependency and matching the smuggled-dropper shape.

Database specific 
{
    "malicious-packages-origins":  [
        {
            "id":  "IN-MAL-2026-019309",
            "import_time":  "2026-08-31T18:22:29.699560569Z",
            "modified_time":  "2026-08-31T18:03:06Z",
            "sha256":  "73e4ce261829117e316f9152160cdcb35c6ba66064f631baba1f8d528673b584",
            "source":  "amazon-inspector",
            "versions":  [
                "1.0.0"
            ]
        }
    ]
}
References
Credits

Affected packages

npm / mfaatest

Package

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

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":  "package.json",
            "sha256":  "c536884e89da4b500bb436f21d38f1401fb44181d3bda291f3480978c3a18e26",
            "tlsh":  "05217932c8f81c5317c57590a9654253f673481b08497c15738a823d8fdd0af22ff19e"
        }
    ],
    "package_integrity":  [
        {
            "filename":  "mfaatest-1.0.0.tgz",
            "hashes":  {
                "sha1":  "3a607f972b138ce32a36a1fe5ef2749319d9464a",
                "sha512_sri":  "sha512-sGRu8mr64c4PLy3KWohHXrpwsBYKSeF14iOdcwY9FGoPQzvfrJZaU992XNwkjoeOwJ8tdJEM6y+XguvckDsieQ=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/mfaatest/MAL-2026-15629.json"