MAL-2026-13038

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/boxy-deps-calculator/MAL-2026-13038.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-13038
Published
2026-08-05T14:31:50Z
Modified
2026-08-05T15:51:53.745193586Z
Summary
Malicious code in boxy-deps-calculator (npm)
Details

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

Source: amazon-inspector (1b0faa243ad4d8a3f6d3b76b94da84738fcd5a097efc0c2e920b4f029b76f970)

setup.js runs at install time: it performs an HTTPS reconnaissance request (https.get to a remote host with an identifier payload) and then spawns a platform-specific shell (spawn("/bin/sh") on POSIX, spawn("cmd") on Windows) via child_process. The file is invoked as an npm lifecycle script, giving the remote-directed shell execution on installer machines with no user interaction beyond npm install. The combination of an install-time outbound HTTP callout plus unconditional shell spawn is a dropper/backdoor shape rather than any documented build behavior, and the package name (a lookalike of common dependency-related utilities) has no legitimate purpose requiring shell execution during install.

Database specific 
{
    "malicious-packages-origins": [
        {
            "versions": [
                "35.9.5"
            ],
            "sha256": "1b0faa243ad4d8a3f6d3b76b94da84738fcd5a097efc0c2e920b4f029b76f970",
            "import_time": "2026-08-05T15:19:45.596098398Z",
            "id": "IN-MAL-2026-015337",
            "modified_time": "2026-08-05T14:31:50Z",
            "source": "amazon-inspector"
        }
    ]
}
References
Credits

Affected packages

npm / boxy-deps-calculator

Package

Name
boxy-deps-calculator
View open source insights on deps.dev
Purl
pkg:npm/boxy-deps-calculator

Affected ranges

Affected versions

35.*
35.9.5

Database specific

indicators 
{
    "package_integrity": [
        {
            "filename": "boxy-deps-calculator-35.9.5.tgz",
            "hashes": {
                "sha512_sri": "sha512-v+K7EOsb+xxU7PMwJdWbTCXE6BFrMLBqvbukDE+9f2kVWlZusDE4HgbDkBrib29HMGhYrn8YjycSq6p7IvFJlw==",
                "sha1": "16b1d52db56fff4ae24f99e296a65d26b43bc68d"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "cda1b69a16aa711947b09bf4c7175416f55bf663338082c8fb9ca9841fb2524c3b2efc",
            "sha256": "210ccb069e9e3174f9f9b68d2dbcb3a5664134145748b6265575b2f7459b01e6",
            "path": "setup.js"
        }
    ]
}
cwes 
[
    {
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506",
        "name": "Embedded Malicious Code"
    }
]
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/boxy-deps-calculator/MAL-2026-13038.json"