MAL-2026-6196

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/build-tracker-n5p1/MAL-2026-6196.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-6196
Aliases
  • GHSA-chqj-php6-8x6m
Published
2026-06-19T06:48:23Z
Modified
2026-06-25T07:46:22Z
Summary
Malicious code in build-tracker-n5p1 (npm)
Details

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

Source: amazon-inspector (e731775fde27ad6db493d20397b27eee9b4a6ea0bf515f9516cc974ea3e12619)

Package name suggests build telemetry tooling, but the tarball ships beacon scripts (beacon18.js, beacon_linux.js) wired to a postinstall lifecycle hook ("postinstall": "node run.js" in package.json line 9). On install, these scripts collect host identifiers via os.hostname()/os.platform() and child_process, then issue outbound HTTP GET/POST requests via http.request from the installer's machine. This combination — auto-execute on install, host fingerprinting, and outbound HTTP exfiltration — is a classic install-time host beacon / data-exfiltration pattern. There is no legitimate build-tracking reason to fingerprint the host and beacon out at install time without consent or configuration.

Source: ghsa-malware (ffcd334da2b23b5f827135dfcf3ac11f0df3510c00f1648c0d34ebb9ed975705)

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-007063",
            "import_time": "2026-06-19T07:17:17.04916041Z",
            "modified_time": "2026-06-19T06:48:23Z",
            "sha256": "e731775fde27ad6db493d20397b27eee9b4a6ea0bf515f9516cc974ea3e12619",
            "source": "amazon-inspector",
            "versions": [
                "1.0.0"
            ]
        },
        {
            "id": "GHSA-chqj-php6-8x6m",
            "import_time": "2026-06-25T07:29:46.477923732Z",
            "modified_time": "2026-06-25T05:38:37Z",
            "ranges": [
                {
                    "events": [
                        {
                            "introduced": "0"
                        }
                    ],
                    "type": "SEMVER"
                }
            ],
            "sha256": "ffcd334da2b23b5f827135dfcf3ac11f0df3510c00f1648c0d34ebb9ed975705",
            "source": "ghsa-malware"
        }
    ]
}
References
Credits

Affected packages

npm / build-tracker-n5p1

Package

Name
build-tracker-n5p1
View open source insights on deps.dev
Purl
pkg:npm/build-tracker-n5p1

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected

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"
    },
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "beacon18.js",
            "sha256": "9c82a9ea5aeb13cc266d5054ddf5c44f87eb909bd09124e0b370aac445c9010f",
            "tlsh": "b112b431e4215c247592d5ad8a0b94293137b3133a62fea0bb8e748c2fce15e82765fd"
        },
        {
            "path": "beacon_linux.js",
            "sha256": "60a0fbee8014300d0dd230765cbea7b61e9660a1584ad6a265de71927ff04c68",
            "tlsh": "5db1b7d6a57b41282bd3b89c679f84061823f217b512d8d0b6dc06248fc7924a1a2ded"
        },
        {
            "path": "package.json",
            "sha256": "3161b3929d5a1c917c8d288f302c6f0dbb7af784f83c13024a5cee04f1e3789d",
            "tlsh": "fdf08b54983039336ac02ad80ca2494af6304f0b61947d5d427b192842dee3a70bf11e"
        }
    ],
    "package_integrity": [
        {
            "filename": "build-tracker-n5p1-1.0.0.tgz",
            "hashes": {
                "sha1": "90d56afa52e250803cff05b1068d20f8a7814072",
                "sha512_sri": "sha512-1ewZPwcvfuPSDb8az9ZKsf+vSdigoiqsz3974zJjSc1wTeduiB0PqmI1KkATaKSS0NMfUF29ZNh5X46lqAZs3Q=="
            }
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/build-tracker-n5p1/MAL-2026-6196.json"