MAL-2026-6097

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/roblox-api-client/MAL-2026-6097.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-6097
Published
2026-06-18T04:07:15Z
Modified
2026-06-18T05:46:38.641070812Z
Summary
Malicious code in roblox-api-client (npm)
Details

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

Source: amazon-inspector (06fae89087d7a50d6397199d5fe1d5fc925c7c353e72a7f8a84e9aeca08224e6)

On npm install, postinstall.js fetches http://betterminecraft.fun/nettspend.bat over plain HTTP, writes it to the OS temp directory, and executes it via cmd /c on Windows (postinstall.js line 7 hardcodes the URL; line 15 spawns the temp file with windowsHide: true). The destination domain is unrelated to the package's stated purpose (a Roblox API client), the URL is mutable and unpinned, no hash or signature verification is performed, and the transport is cleartext HTTP — the operator can swap the served bytes at will. package.json metadata is placeholder-only (author: your-name, repo github.com/your-username/roblox-api-client), consistent with a hit-and-run squat rather than a legitimate publisher. This is a textbook install-time RCE dropper: any Windows developer running npm install roblox-api-client silently executes attacker-controlled code under their user account.

Database specific 
{
    "malicious-packages-origins": [
        {
            "sha256": "06fae89087d7a50d6397199d5fe1d5fc925c7c353e72a7f8a84e9aeca08224e6",
            "source": "amazon-inspector",
            "modified_time": "2026-06-18T04:07:15Z",
            "id": "IN-MAL-2026-006973",
            "versions": [
                "1.0.0"
            ],
            "import_time": "2026-06-18T05:42:06.035939061Z"
        }
    ]
}
References
Credits

Affected packages

npm / roblox-api-client

Package

Name
roblox-api-client
View open source insights on deps.dev
Purl
pkg:npm/roblox-api-client

Affected ranges

Affected versions

1.*
1.0.0

Database specific

cwes 
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/roblox-api-client/MAL-2026-6097.json"
indicators 
{
    "evidence_files": [
        {
            "sha256": "f51927f48193e74b892ea70f9bce90650da8a1bcc561619bb25c4f23e5a65cdc",
            "tlsh": "70f0acd50ef3623061b260d0a3a1591aa633c0123281ced0b4cc54405fd36b99ef1be8",
            "path": "postinstall.js"
        },
        {
            "sha256": "e1f0aa169674a1977736907b87705981e8b2438290d475735cd12e2cfa0bec81",
            "tlsh": "5b012434c5648a7329d462949d7a2453a96a0c07841abc0c23d7216c8b9d6af51bd6bf",
            "path": "package.json"
        }
    ],
    "package_integrity": [
        {
            "hashes": {
                "sha512_sri": "sha512-YoxD4uxP/HGGEJvCICTQSK9XYbMm6Kv5pxrwgo4G5nCwcp0/qZrkdybqjbfSJCWeRQdx/P/cadtI2CETWL+REw==",
                "sha1": "b3db3d0b3ad3777bc40fffb4fb5276ed579b60ee"
            },
            "filename": "roblox-api-client-1.0.0.tgz"
        }
    ]
}