MAL-2026-12134

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/accounts-limits/MAL-2026-12134.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-12134
Published
2026-08-05T09:06:34Z
Modified
2026-08-05T10:05:45.154142470Z
Summary
Malicious code in accounts-limits (npm)
Details

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

Source: amazon-inspector (69c43a5fbac213b36e4a3d7c25d7f41311e6f3f111f3b175e2f306077afbcde0)

index.js unconditionally requires./runtime.js, which on module load selects a per-platform asset path, fetches an opaque binary from one of three Cloudflare Workers hosts (oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf102-baf.workers.dev) with a DNS-TXT chunked base64 fallback under *.dl.well1.site, writes the bytes to /tmp or the Windows TEMP directory under benign-looking names (.cache<hex>, dotnetdiag<hex>.exe,.analytics_state), chmods the file 0755, and detached-spawns it via spawn('/bin/sh',...) or spawn('cmd',...). No hash or signature verification is performed and the fetched payload is unrelated to the stated 'accounts limits' purpose. Both the primary Workers hosts and DNS fallback domains are assembled at runtime by join()ing fragmented substrings (e.g. ['tin.dl.w','ell','1.site'].join(''), ['oob-worker.cf100-4','16','.workers.de','v'].join('')), and stderr is stubbed via _l() to suppress diagnostics. A second dropper at lib/telemetry.js (81KB, presented as an 'analytics SDK') duplicates the chmod-and-spawn pattern with cp.spawn('/bin/sh',['-c', filePath+' &']) and base64-decoded buffer writes; it is staged in the tarball but not currently on the require-chain from index.js.

Database specific
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-014553",
            "modified_time": "2026-08-05T09:07:15Z",
            "sha256": "69c43a5fbac213b36e4a3d7c25d7f41311e6f3f111f3b175e2f306077afbcde0",
            "source": "amazon-inspector",
            "versions": [
                "0.0.2"
            ],
            "import_time": "2026-08-05T09:28:24.91549909Z"
        },
        {
            "import_time": "2026-08-05T09:28:24.423432169Z",
            "modified_time": "2026-08-05T09:06:34Z",
            "sha256": "f213229f671ddeca9cae21feab6f9eb0bbd3b88743b8af6dbea340a2a609adbe",
            "source": "amazon-inspector",
            "versions": [
                "33.6.6"
            ],
            "id": "IN-MAL-2026-014548"
        }
    ]
}
References
Credits

Affected packages

npm / accounts-limits

Package

Affected ranges

Affected versions

0.*
0.0.2
33.*
33.6.6

Database specific

cwes
[
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    },
    {
        "name": "Embedded Malicious Code",
        "description": "The product contains code that appears to be malicious in nature.",
        "cweId": "CWE-506"
    }
]
indicators
{
    "package_integrity": [
        {
            "filename": "accounts-limits-0.0.2.tgz",
            "hashes": {
                "sha512_sri": "sha512-0o8AZc4FTCrCujqwrPnGDle1rvb7sexIZ4Kii6PQ/ggZUVPJH9HQVWUsRWvCD8GuKDABDIu/dtcu4jw6lIUW7A==",
                "sha1": "6151877bf15939fbe481fdc2ffe9b61e449717e8"
            }
        }
    ],
    "evidence_files": [
        {
            "tlsh": "dda1d86a067570298bb09be5c7174416f75ae5a33780c190fb5ca8981fb7124c371efc",
            "path": "_runtime.js",
            "sha256": "f868fb41437dee01afaee4cad8e0532f7acff61ff9da6fe4b8dbf7008b966479"
        },
        {
            "tlsh": "79835056566a142186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc",
            "sha256": "ef2969a73a8f01127f08740e14fce7fcd162c39278375cfc644639a002f78dfb",
            "path": "lib/telemetry.js"
        }
    ]
}
source
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/accounts-limits/MAL-2026-12134.json"