MAL-2026-6481

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/gx-npm-ui/MAL-2026-6481.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-6481
Published
2026-06-25T22:30:07Z
Modified
2026-06-25T23:16:25.029583665Z
Summary
Malicious code in gx-npm-ui (npm)
Details

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

Source: amazon-inspector (04e5ac6b8b24f2c158c37d3d6ac268bbf7f472433660064491538ee468cfcfcb)

Package published at version 99.99.99 under the gx-npm-* namespace, a shape designed to win npm version resolution against private internal packages of the same name. package.json declares postinstall=node beacon.js, which runs unconditionally on npm install. beacon.js collects the installer's hostname, OS username, current working directory, package name, Node version, and the first 80 environment variable names, then exfiltrates them two ways to the hardcoded out-of-band host d8uectoqtvskhftsa940pm3kth3ahdxn4.oast.me: (1) a DNS lookup encoding the collected identifiers as subdomain labels, and (2) an HTTPS GET with a base64-encoded JSON payload in the query string. Any CI/build system or developer machine that resolves this package against the public npm registry leaks host identity and environment-variable names to an attacker-controlled interactsh/OAST endpoint on every install.

Database specific 
{
    "malicious-packages-origins": [
        {
            "versions": [
                "99.99.99"
            ],
            "modified_time": "2026-06-25T22:30:07Z",
            "sha256": "04e5ac6b8b24f2c158c37d3d6ac268bbf7f472433660064491538ee468cfcfcb",
            "id": "IN-MAL-2026-007559",
            "source": "amazon-inspector",
            "import_time": "2026-06-25T23:00:34.523448188Z"
        }
    ]
}
References
Credits

Affected packages

npm / gx-npm-ui

Package

Name
gx-npm-ui
View open source insights on deps.dev
Purl
pkg:npm/gx-npm-ui

Affected ranges

Affected versions

99.*
99.99.99

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": "gx-npm-ui-99.99.99.tgz",
            "hashes": {
                "sha512_sri": "sha512-l6pqw2U4jjK24d8hpF7uJOl9DmdSgd2r4NKEU0jEK5NiVdwYsWGZK0Bon7db4i3vm3MDiywtpFIsdJfE/3ZxXA==",
                "sha1": "d3d4337397db1302a247ab4b21a5034b89c1d9a5"
            }
        }
    ],
    "evidence_files": [
        {
            "path": "beacon.js",
            "tlsh": "2841879f99e8a12822f721f446af402526b3d2631358ddd0745ca3158f75db803d6cfe",
            "sha256": "8642a1b9117942eed77327a315389d97f652317c03f2506a9ee28793621af7b5"
        },
        {
            "path": "package.json",
            "tlsh": "1af00e98b414aa3b0fe259d2087a649b37728c4e5b046145878f4014a20ebe303f72fb",
            "sha256": "952da3c3a1c60a06e47c944889975b03c30bf1b69b33b70e062d78ba7d5224de"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/gx-npm-ui/MAL-2026-6481.json"